Question

Write the following expression as a product of three factors: x^4 - y^4

Answer 1

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

Answer 2

Ah, I get it now. Thank you very much!

Answer 3

a^2-b^2=(a+b)(a-b)

Answer 4

you're welcome.