Question

phân tích đa thức thành nhân tử
10x(x-y)-(y-x)^2

Answer 1

10x(x-y)-(y-x)²

=10x(x-y)+(x-y).(y-x)

=(x-y).(10x+y-x)

=(x-y).(9x+y)

Answer 2

\(10x\left(x-y\right)-\left(y-x\right)^2\)

\(=10x\left(x-y\right)-\left(x-y\right)^2\)

\(=\left(x-y\right)\left(10x-x+y\right)\)

\(=\left(x-y\right)\left(9x+y\right)\)