Question

using identities ( x + 4 ) ( x -4 )

Answer 1

hey your ans is here


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given:-

(x+4)(x-4)

its forming an identity
(a+b)(a-b)=a2-b2

so

(x+4)(x-4)=x2-16

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Answer 2

(a+b)(a-b) =a square -b square
so
x^2-16