(x²-y²)²-8(x²+y²-2)因式分解

问题描述:

(x²-y²)²-8(x²+y²-2)因式分解

(x²-y²)²-8(x²+y²-2)=(x²-y²)²-8(x²-y²+2y²-2)=(x²-y²)²-8(x²-y²)+16-16y²=(x²-y²-4)²-16y²=(x²-...