Question

phân tích thành nhân tử:

2xy+y-x-x²-y²=

Answer 1

\(-\left(x^2-2xy+y^2\right)+\left(x-y\right)=-\left(x-y\right)^2+\left(x-y\right)\)

\(=\left(x-y\right)\left(-x+y+1\right)\)

Answer 2

-(x^2-2xy+y^2)+y-x

-(x-y)^2-(x-y)

-(x-y)(x-y+1)

tick nghen

Answer 3

-(x²-2xy+y²)+(x-y)

=-(x-y)²+(x-y)

=-(x-y)(x-y-1)

Answer 4

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

=-(x-y)^2-(x-y)

=(x-y)(-x+y-1)