Expand and simplify (x+7)(x-7)

asked May 17, 2016 227k views

4 votes

by Pojo

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3 votes

(x + 7)(x - 7)
x² - 7x + 7x - 49
x² - 49

Varnit answered May 18, 2016

8.6k points

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1 vote

7(x+7)(x-7) is in the form (a+b)(a-b) so it's equal to
a^(2)- b^(2)

Which give us:
(x+7)(x-7) =
x^(2) - 49

Hope this Helps :)

Hooknc answered May 22, 2016

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