Question

Thu gọn

\(B=\dfrac{\sqrt{x}+1}{\sqrt{x}-3}-\dfrac{11\sqrt{x}-3}{9-x}\)

Answer 1

\(ĐK:x\ge0;x\ne9\\ B=\dfrac{x+4\sqrt{x}+3+11\sqrt{x}-3}{\left(\sqrt{x}-3\right)\left(\sqrt{x}+3\right)}\\ B=\dfrac{x+15\sqrt{x}}{\left(\sqrt{x}-3\right)\left(\sqrt{x}+3\right)}\)