Question

(x - y) (x + y) = x2 - y2​

Answer 1

Its a formula.......

X²+xy-xy-y² =》 x²-y²

Have a good day ☺

Answer 2

Answer:

$(x - y) (x + y) = x^{2} + xy - xy -y^{2} = x^{2} -y^{2}$