Which products result in a difference of squares? Select three options.

Question

(x minus y)(y minus x)
(6 minus y)(6 minus y)
(3 + x z)(negative 3 + x z)
(y squared minus x y)(y squared + x y)
(64 y squared + x squared)(negative x squared + 64 y squared)

Answer 1

(6 - y)(6 + y)
(y^2 - xy)(y^2 + xy)
(64y^2 + x^2)(8y + x)(8y - x)