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erika40 erika40
  • 29-01-2017
  • Mathematics
Answered

completely factor the following expression 9x^2-36

Verified Answer :

lvmai
lvmai lvmai
  • 29-01-2017

Look at perfect square factoring: x²-b ⇒ (x-b)(x+b)
√9=3
√36=6
√x²=x
knowing that:
(3x+6)(3x-6)

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