因式分解5(x²-y²)²-1/5x²y²

问题描述:

因式分解5(x²-y²)²-1/5x²y²
因式分解5(x²-y²)²-1/5x²y²

原式=1/5[25(x²-y²)²-x²y²]
=1/5(5x²-5y²+xy)(5x²-5y²-xy)