Question

\(\dfrac{1}{x-2}-\dfrac{1}{x}\)=?

Answer 1

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

Mình giải ra luôn chứ không ghi đề nữa nha bn! :D

Answer 2

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