How do you factor the expression #x^2- 16#?

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How do you factor the expression #x^2- 16#?

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Answer 1 · 2016-01-03T15:22:30

(x - 4 )(x + 4 )

Explanation:

this expression is a difference of 2 squares thus called since # x^2 # is a perfect square and 16 is a perfect square and they are separated by a - ( difference )

to factor this we require the√ #x^2# # = x# and √16 = 4

so # x^2 - 16 = (x - 4 )(x + 4 )

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How do you factor the expression #x^2- 16#?

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