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8.5 Factoring Differences of Squares (top)  Factor each term  Write one set of parentheses with the factors adding and one with the factors subtracting.

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Presentation on theme: "8.5 Factoring Differences of Squares (top)  Factor each term  Write one set of parentheses with the factors adding and one with the factors subtracting."— Presentation transcript:

1 8.5 Factoring Differences of Squares (top)  Factor each term  Write one set of parentheses with the factors adding and one with the factors subtracting  Foil to check your answer Ex: n 2 - 25

2 8.5 Factoring Differences of Squares (bottom) Ex: 5x 3 + 15x 2 – 5x - 15Ex: 121a = 49a 3

3 8.6 Factoring Perfect Squares (top)  Perfect Square Trinomial: Is the first term a perfect square? Is the last term a perfect square? Does the second term = 2 x the product of the roots of the first and last terms?  The third term (c) must be positive  Use the sign of the second term  If any of these answers is no- it is not a perfect square trinomial

4 8.6 Factoring Perfect Squares (bottom) Ex: x 2 – 14x + 49a 2 – 8a - 16 Ex: 9y 2 + 12y + 4

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