delilah0304 delilah0304

24-07-2017
Mathematics

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Solve using perfect square factoring patterns. x2 – 8x + 16 = 25

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24-07-2017

x^2 – 8x + 16 = 25
-25 both sides
x^2-8x-9=0
(x-9)(x+1)
x=9,-1

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