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