4x²y-12xy²+9y³

问题描述:

4x²y-12xy²+9y³

因式分4x²y-12xy²+9y³
=y(4x²-12xy+9y²)
=y(2x-3y)²。

4x²y-12xy²+9y³
=y(4x²-12xy+9y²)
=y(2x-3y)².