dodardtatiana dodardtatiana
  • 17-11-2017
  • Mathematics
contestada

multiply (x+7) (x-7)

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choixongdong
choixongdong choixongdong
  • 17-11-2017
 (x+7) (x-7)
= x^2 - 49

using a^2 - b^2 = (A + b)(a - b)
hope it helps
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vaeh123
vaeh123 vaeh123
  • 17-11-2017
foil the answer so it would be 2x-7x+7x-49 then you would combine like terms so the answer is 16x-49
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