Answer
$$\int \frac{dx}{\sqrt{x}+x\sqrt{x}}=2arctan\,\sqrt{x}+C$$
Work Step by Step
$$let\ x=t^{2},\,dx=2t\,dt$$
$$\int \frac{dx}{\sqrt{x}+x\sqrt{x}}=\int \frac{2t}{t+t^{3}}dt=\int \frac{2}{1+t^{2}}dt$$
$$=2arctan\,t+C=2arctan\,\sqrt{x}+C$$
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