Toán tính $\frac{1}{2x}$ -$\frac{1}{2\sqrt{x} }$ 19/11/2021 By Camila tính $\frac{1}{2x}$ -$\frac{1}{2\sqrt{x} }$
$\dfrac{1}{2x}-\dfrac{1}{2\sqrt[]{x}}$
$ = \dfrac{1-x}{2x}$