Question

Rút gọn:

B= 8/√x -2 - √x +26/x-4

Answer 1

\(\dfrac{8}{\sqrt{x}-2}-\dfrac{\sqrt{x}+26}{x-4}\\ đk:x\ne4;x>0\\ =\dfrac{8\left(\sqrt{x}+2\right)-\sqrt{x}-26}{x-4}\\ =\dfrac{8\sqrt{x}+16-\sqrt{x}-26}{x-4}\\ =\dfrac{7\sqrt{x}-10}{x-4}\)