Question

(x-y)²-(x+y)² a)0 b)2y² c)-2y² d)-4xy e)-2(x+y)²

Answer 1

D

Explanation:

-4xy

will be your answer after factoring

Answer 2

d

Explanation:

Given

(x - y)² - (x + y)² ← expand both factors using FOIL

= x² - 2xy + y² - (x² + 2xy + y²) ← distribute by - 1

= x² - 2xy + y² - x² - 2xy - y² ← collect like terms

= - 4xy → d