Question

帮忙解一道数学题,谢谢!

分解因式（注：数2,2,3字为平方数）4xy2—4x2y-y3

Answer 1

4xy²-4x²y-y³
=-y(-4xy+4x²+y²)
=-y(4x²-4xy+y²)
=-y(2x-y)²

Answer 2

原式=y*(4xy - 4x2 - y2)
=-y*(4x2 - 4xy + y2)
=-y*(2x-y)2

Answer 3

-y(4x2-4xy+y2)=-y(2x-y)(2x-y)

Answer 4

-y(y-2x)2 (最后个2是平方数)

Answer 5

-y(2x-y)2

Answer 6

-y(2x-y)²