Question

rút gọn phân thức: x²-y² phần x+y 

Answer 1

`(x^2-y^2)/(x+y)`

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

`=x-y`

Answer 2

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

Answer 3

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