Solve by factoring... GSE Algebra I Today’s Question: When does a quadratic have an imaginary solution? Standard: MCC9-12..A.REI.4b.

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Presentation transcript:

Solve by factoring..

GSE Algebra I Today’s Question: When does a quadratic have an imaginary solution? Standard: MCC9-12..A.REI.4b

Solving Quadratic Equations by Taking Square Roots

Solving with Square Roots 1.Get x 2 or binomial squared by itself 2.Take the square root of BOTH sides of the equals sign 3.Don’t forget the  sign 4.Simplify

Solve by Taking Square Roots

Falling Objects! Use h = -16t 2 + h 0 Height of the object AFTER it has fallen TIME after the object has dropped Object’s INITIAL height

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For a period of 48 months, the average monthly operating costs for a small business C (in dollars) is approximated by the model C = 0.55t where t is the number of months. During which month was the average operating cost $1430?Example

Application The formula for the volume of a cylinder is V =. Solve the formula for r.

Textbook p. 536 #2, 20, 22 p. 537 #41 – 45

Homework Practice Sheet