## how would the expression x^2-4 be written using difference of squares

Question

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## Answers ( No )

Difference of squares

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

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

a^2 – b^2 = (a + b)(a – b) so we have a = x and b = 2:-

x^2 – 4 = (x + 2)(x – 2)(answer)