Question

(x-y) (x+y)=x²-y²
true or false​

Answer 1

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

Therefore,It's true...

Answer 2

Answer:

true

Step-by-step explanation:

(x-y)(X+y)=x^2-y^2

LHS

=x^2+xy-xy-y^2

=x^2-y^2. (xy-xy=0)

LHS=RHS