$\int x^2\left(4-x^2\right)^{\frac{3}{2}}dx$
$\left(a^2-2\right)^3$
$-21+75+\left[32\right]+65$
$9x^2+18+4$
$\int\left(10x\sqrt{2x-1}\right)dx$
$\frac{tan\left(\frac{x}{2}\right)}{sec\left(\frac{x}{2}\right)^2}$
$-x=30$
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