Question

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

Answer 1

Pt da thuc thanh nhan tu

 

Answer 2

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

`=(x-y)(x+y)+5(x-y)`

`=(x-y)(x+y+5)`

Answer 3

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