Question

find the third proportional of (x-y)² and (x²-y²)²​

Answer 1

Answer:

(x2−y2):(x−y)=(x−y):x

⇒x=(x2−y2)(x−y)(x−y)

⇒x=(x+y)(x−y)(x−y)(x−y)

⇒x=(x+y)(x−y)