[tex]\int x^3\sqrt{4-9x^2}dx[/tex](adsbygoogle = window.adsbygoogle || []).push({});

I tried to use [tex]x=\frac{2}{3}\cos{(x)}[/tex] but it just left me with [tex]\int \sin^3{(x)}\cos^2{(x)}dx[/tex]

Any suggestions?

Thanks for your help.

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# Trigonometric Substitution

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