Question

phan tch da thuc thanh nhan tu

2x^2-2y^2-5x+5y

Answer 1

Ta có: 

\(2x^2-2y^2-5x+5y\)

\(=2\left(x^2-y^2\right)-5\left(x-y\right)\)

\(=2\left(x-y\right)\left(x+y\right)-5\left(x-y\right)\)

\(=\left(x-y\right)\left(2x+2y-5\right)\)

Answer 2

2x² - 2y² -5x + 5y

= 2.(x² -y²)  - 5.(x-y)

= 2.(x+y).(x-y) - 5.(x-y)

= (x-y).(2x+2y-5)