Bạn tham khảo:
$M=\dfrac{a+1}{\sqrt{a}}+$ $\dfrac{a\sqrt{a}+1}{a-\sqrt{a}}+$ $\dfrac{a^2-a\sqrt{a}+\sqrt{a}}{\sqrt{a}-a\sqrt{a}}$
$M=\dfrac{a+1}{\sqrt{a}}+$ $\dfrac{a+\sqrt{a}+1}{\sqrt{a}}-$ $\dfrac{(a\sqrt{a}+1)(\sqrt{a}-1)}{\sqrt{a}(\sqrt{a}-1)(\sqrt{a}+1)}$
$M=\dfrac{2a+\sqrt{a}+2}{\sqrt{a}}-$ $\dfrac{a-\sqrt{a}+1}{\sqrt{a}}$
$M=\dfrac{a+2\sqrt{a}+1}{\sqrt{a}}$
$\dfrac{(\sqrt{a}+1)^2}{\sqrt{a}}$
Học tốt
