Question

Phân tích đa thức thành nhân tử \(x(x-y)+y(y-x)\)

Answer 1

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

=> x(x-y)-y(x+y)

=> ............................

tự làm

Answer 2

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

Answer 3

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

Answer 4

\(x(x-y) +y(y-x) =x(x-y)-y(x-y) =(x-y) \)2

Answer 5

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

=x(x-y)-[y-(x-y)]

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

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