Do Now 2/8/19 Take out HW from last night. Copy HW in your planner.

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Do Now 2/8/19 Take out HW from last night. Copy HW in your planner. Text p. 381, #4-40 evens Copy HW in your planner. Puzzle Time worksheet 7.4 – Schoology Quiz sections 7.1-7.4 Tuesday In your notebook, factor the following 2 polynomials.

Factor Challenge

Homework Text p. 381, #4-40 evens

Homework Text p. 381, #4-40 evens

Learning Goal Learning Target SWBAT simplify, factor, and solve polynomial expressions and equations Learning Target SWBAT review simplifying polynomial expressions by adding, subtracting, and multiplyiing, and solving polynomial equations using greatest common factors

Section 7.4 “Solving Polynomial Equations in Factored Form” Zero-Product Property If ab = 0, then a = 0 or b = 0. The zero-product property is used to solve an equation when one side of the equation is ZERO and the other side is the product of polynomial factors. (x – 4)(x + 2) = 0 The solutions of such an equation are called ROOTS. x + 2 = 0 x – 4 = 0 x = -2 x = 4

Solve Equations By Factoring 42p² = -14p Bring all variables to one side 42p² + 14p = 0 Factor left side of equation 14p(3p + 1) = 0 Zero product property 3p + 1 = 0 14p = 0 p = -1/3 p = 0 The solutions of the equation are 0 and -1/3.

You can model the arch of a fireplace using the equation y = -1/9(x + 18)(x – 18), where x and y are measured in inches. The x-axis represents the floor. Find the width of the arch at the floor level.

You can model the arch of an entrance to a train tunnel by using the equation y = -5/16(x + 8)(x – 8), where x and y are measured in feet. The x-axis represents the ground. Find the width of the entrance at the ground level. 16 feet Find the maximum height of the entrance of the train tunnel. 20 feet

where x and y are measured in feet. The x-axis represents the ground. A top hat is an element typically found on launched coasters. The element consists of 90-degree ascent up a hill, followed by a 90-degree descent. You can model the Kingda Ka roller coaster by using the equation y = -3/20(x + 55)(x –55), where x and y are measured in feet. The x-axis represents the ground. Find the width of the top hat of Kingda Ka. 110 feet Find the maximum height of Kingda Ka rounded to the nearest foot. 454 feet

Clock Partners With your 2:00 partner, complete Extra Practice in your Student Journal, #1-25 odds on pages 222& 223.