Question

solve (x-1) (x+1) please solve it quick ​

Answer 1

$(x - 1)(x + 1) \\ = {x}^{2} - {1}^{2} \\ = {x}^{2} - 1$

Formula used :

$(a + b)(a - b) = {a}^{2} - {b}^{2}$

Answer 2

your answer is x^2-1

refer the attachment