Question

Simplify : - (x2-7) (x2+7).​

Answer 1

Answer:

in unique way

let take x^2 be A and 7 be B

so (a+b)(a-b )

a^2 +ba-ab-b^2

so

a^2 - b^2

(x^2)^2 - 49

x^4 - 49