(x-y)²=(x-y)(x-y)=x²-2xy+y²
(x+y)²=(x+y)(x+y)=x²+2xy+y²
x²-2xy+y²+x²+2xy+y²=2x²+2y²
Copyright © 2024 SCHOLAR.TIPS - All rights reserved.
Answers & Comments
Verified answer
(x-y)²=(x-y)(x-y)=x²-2xy+y²
(x+y)²=(x+y)(x+y)=x²+2xy+y²
x²-2xy+y²+x²+2xy+y²=2x²+2y²