Evaluate the indefinite integral
∫
x
3
d
x
x
2
+
9
\displaystyle \int{\frac{{{x}^{{3}}{\left.{d}{x}\right.}}}{{\sqrt{{{x}^{{2}}+{9}}}}}}
∫
x
2
+
9
x
3
d
x
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Question 6
+
C
\displaystyle +{C}
+
C
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