因式分解:64x²y²-(x²+16y²)²
问题描述:
因式分解:64x²y²-(x²+16y²)²
答
64x²y²-(x²+16y²)²
=(8xy+x²+16y²)(8xy-x²-16y²)
=-(x²+8xy+16y²)(x²-8xy+16y²)
=-(x+4y)²(x-4y)²