Question

phân tích thành nhân tử:

7x( x-y) +2 (y-x)^2

Answer 1

\(7x\left(x-y\right)+2\left(y-x\right)^2=7x\left(x-y\right)-2\left(x-y\right)^2=\left(7x-2x-2y\right)\left(x-y\right)\)

Answer 2

7x(x-y)+2(y-x)²

=7x(x-y)+2(x-y)²

=(x-y)(7x+2.x-y)

=(x-y)(7x²-2y)

HT NHA

Answer 3

7x( x-y) +2 (y-x)^2=7x(x−y)−2(x−y)^2=(7x−2x+2y)(x−y)=(5x+2y)(x-y)