Question

初二因式分解

问题：4x（y的2次方）-4（x的2次方）y-(y的三次方）

Answer 1

4xy^2-4x^2y-y^3
=-y(x^2-4xy+y^2)
=-y(x-2y)^2

Answer 2

4xy^2-4x^2y-y^3
=-y(y^2-4xy+4x^2)
=-y(y-2x)^2