Question

Simplify: (px+qy)² - (qx+py)²

Answer 1

Step-by-step explanation:

Use a^2 - b^2 formula bro

Answer 2

Answer:

$= (px + qy \: + qx + py) \times (px + qy - qx - py)$

$=( (p + q)x + (p + q)y) \times ((p - q)x - (p - q)y)$

$= (p + q) \times (x + y) \times (p - q) \times (x - y)$