Question

Please help, What (x+y)(x-y)

Answer 1

Answer:

$x^{2}$-$y^{2}$

Step-by-step explanation:

(x+y)(x-y)

Use Foil

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

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

Combine

$x^{2}$-xy+xy-$y^{2}$

-xy and xy cancel each other out so our final answer is

$x^{2}$-$y^{2}$

Answer 2

Answer:

x^2-y^2

Step-by-step explanation:

positive x * positive x = x^2

positive y * negative y = -y^2