因式分解公式法 带三次方的怎么做?

2025-05-19 02:21:38
推荐回答(1个)
回答1:

4xy^2-4x^2y-y^3

=-y(4x²-4xy+y²)
=-y(2x-y)²

-a+2a^2-a^3

=-a(a²-2a+1)
=a(a-1)²