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Section 10.1 Solving Quadratic Equations by the Square Root Property
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OBJECTIVES Solve quadratic equations of the form B A
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DEFINITION Square Root Property of Equations
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PROCEDURE To solve any equation of form Add B Then
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PROCEDURE Divide by A To solve any equation of form
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PROCEDURE Using square root property, To solve any equation of form
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Section 10.1 Exercise #1 Chapter 10 Quadratic Equations
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Solve.
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Section 10.1 Exercise #2 Chapter 10 Quadratic Equations
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Solve.
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Section 10.1 Exercise #3 Chapter 10 Quadratic Equations
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Solve.
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Section 10.1 Exercise #4 Chapter 10 Quadratic Equations
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Solve.
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or
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Section 10.1 Exercise #5 Chapter 10 Quadratic Equations
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Solve.
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Section 10.2 Solving Quadratic Equations by Completing the Square
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OBJECTIVES A Solve a quadratic equation by completing the square.
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PROCEDURE 1.Find the coefficient of x term. Completing the Square
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PROCEDURE 2. Divide coefficient by 2. Completing the Square
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PROCEDURE 3. Square this number to obtain last term. Completing the Square
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PROCEDURE 1.Write equation with variables in descending order on left and constants on right. Solving a Quadratic Equation by Completing the Square
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PROCEDURE Solving a Quadratic Equation by Completing the Square 2. If coefficient of square term is not 1, divide each term by this coefficient.
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PROCEDURE Solving a Quadratic Equation by Completing the Square 3. Add square of one-half of coefficient of first-degree term to both sides.
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PROCEDURE Solving a Quadratic Equation by Completing the Square 4. Rewrite left-hand side as a perfect square binomial.
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PROCEDURE Solving a Quadratic Equation by Completing the Square 5.Use square root property to solve resulting equation.
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Section 10.2 Chapter 10 Quadratic Equations
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Section 10.2 Exercise #6 Chapter 10 Quadratic Equations
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Section 10.2 Exercise #7 Chapter 10 Quadratic Equations
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Section 10.2 Exercise #8 Chapter 10 Quadratic Equations
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Section 10.2 Exercise #9 Chapter 10 Quadratic Equations
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Section 10.3 Solving Quadratic Equations by the Quadratic Formula
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OBJECTIVES A Write a quadratic equation in the form
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OBJECTIVES B Solve a quadratic equation using the quadratic formula.
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DEFINITION The Quadratic Formula
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DEFINITION The Quadratic Formula
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DEFINITION The Quadratic Formula
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DEFINITION The Quadratic Formula
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Section 10.3 Exercise #10 Chapter 10 Quadratic Equations
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Section 10.3 Exercise #11 Chapter 10 Quadratic Equations
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Solve.
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Section 10.3 Exercise #12 Chapter 10 Quadratic Equations
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Solve. or
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Section 10.3 Exercise #13 Chapter 10 Quadratic Equations
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Solve. or
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Section 10.3 Exercise #14 Chapter 10 Quadratic Equations
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Solve. or LCD = 4 Multiply by 4:
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Section 10.4 Graphing Quadratic Equations
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OBJECTIVES A Graph quadratic equations.
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OBJECTIVES B Find intercepts and vertex and graph parabolas involving factorable quadratic expressions.
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DEFINITION Graph of a Quadratic Equation The graph of y = ax 2 + bx + c is a parabola that
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PROCEDURE Graphing a Factorable Quadratic Equation 1. Find y -intercept by letting x = 0, then finding y.
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PROCEDURE Graphing a Factorable Quadratic Equation 2.Find x -intercept by letting y = 0, factoring equation then solving for x.
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PROCEDURE Graphing a Factorable Quadratic Equation 3.Find vertex by averaging solutions of equation and substituting in equation to find y -coordinate.
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PROCEDURE Graphing a Factorable Quadratic Equation 4.Plot points found and one or two more points. Curve drawn through points found is graph.
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Section 10.4 Exercise #15 Chapter 10 Quadratic Equations
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turns up
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Section 10.4 Exercise #16 Chapter 10 Quadratic Equations
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turns up so
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Section 10.4 Exercise #17 Chapter 10 Quadratic Equations
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turns down so
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Section 10.4 Exercise #18 Chapter 10 Quadratic Equations
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or
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Section 10.5 Applications: Pythagoras’ Theorem
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OBJECTIVES A Use the Pythagorean Theorem to solve right triangles.
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OBJECTIVES B Solve word problems involving quadratic equations.
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DEFINITION Pythagorean Theorem Square of hypotenuse of a right triangle equals sum of squares of other two sides:
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Section 10.5 Exercise #19 Chapter 10 Quadratic Equations
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Find the length of the hypotenuse of a right triangle if the lengths of the two sides are 2 inches and 5 inches.
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Section 10.5 Exercise #20 Chapter 10 Quadratic Equations
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Section 10.6 Functions
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OBJECTIVES A Find the domain and range of a relation.
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OBJECTIVES B Determine whether a given relation is a function.
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OBJECTIVES C Use function notation. D Solve an application.
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DEFINITIONS Relation, Domain and Range A relation is a set of ordered pairs.
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DEFINITIONS Relation, Domain and Range Domain of a relation is the set of all possible x -values.
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DEFINITIONS Relation, Domain and Range Range of relation is the set of all possible y -values.
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DEFINITION Function Set of pairs in which each domain value has exactly one range value. ( no two different ordered pairs have same first coordinate )
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Section 10.6 Exercise #21 Chapter 10 Quadratic Equations
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Find the domain and range of
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Section 10.6 Exercise #22 Chapter 10 Quadratic Equations
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Find the domain and range of
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Section 10.6 Exercise #23 Chapter 10 Quadratic Equations
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State whether each of the following is a function. This is not a function. This is a function. (For every x, unique y)
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Section 10.6 Exercise #24 Chapter 10 Quadratic Equations
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Section 10.6 Exercise #25 Chapter 10 Quadratic Equations
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The average price P ( n ) of books depends on the number n of millions of books sold and is given by the function Find the average price of a book when 20 million copies are sold. The average price is $17.
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