Question

2xy-x的平方-y的平方 分解因式

Answer 1

2xy-x²-y²

=-(x²-2xy+y²)

=-(x-y)²

4xy²-4x²y-y³

=y(4xy-4x²-y²)

=-y(4x²-4xy+y²)

=-y(2x-y)²

3-6x+3x²

=3(1-2x+x²)

=3(1-x)²

-a+2a²-a³

=-a(1-2a+a²)

=-a(1-a)²