Question

The value of (X+1) (X-1) is​

Answer 1

Answer:

We know that (a+b) (a-b) = a² - b²

(X + 1 ) ( X - 1 ) = X² - 1

Answer 2

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(X+1)(X-1)=X²-1²=X²-1

This is an identity which is

(a+b)(a-b)=@

a²-b²