thebest39953 thebest39953

19-12-2019
Mathematics

contestada

Factor completely. x^2-4

Respuesta :

PollyP52 PollyP52

19-12-2019

Answer:

(x - 2)(x + 2).

Step-by-step explanation:

This is the difference of 2 squares:

a^2 - b^2 = (a - b)(a + b)

So

x^2 - 4 = (x - 2)(x + 2).

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