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Get out your homework, but keep it at your desk..

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Presentation on theme: "Get out your homework, but keep it at your desk.."— Presentation transcript:

1 Get out your homework, but keep it at your desk.

2 Dividing Polynomials get out a coin for the traffic signal

3 Review of long division…

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5 Remember all exponents must be accounted for and have a place holder when dividing…

6 Review of synthetic division… Remember the divisor must be in the form (x – k) to use this method. In other words, the leading coefficient and the exponent on x must be 1.

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9 The Remainder theorem… Given f(x) = x 4 – 10x 2 – 2x + 4 Find f(-3).

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12 Factor Theorem… What makes a number a “factor” of another number? For example…why is 3 a factor of 12? (x – k) is a factor of f(x) if and only if the remainder is 0 … f(k) = 0.

13 Show that x = -4 is a solution to x 3 – 28x – 48 = 0. Use this to completely factor f(x) = x 3 – 28x – 48 Show that x = -2 is a solution to x 3 + 2x 2 – 3x – 6 = 0. Use this to completely factor f(x) = x 3 + 2x 2 – 3x – 6

14 Use the graph to guess possible linear factors of f(x). Then completely factor f(x). F(x) = 5x 3 – 12x 2 – 23x + 42


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