$-3\cos\left(4x+\pi\right)+6$
$\frac{\left(2\sqrt{x^5}\cdot\left(3\right)-20\sqrt{x^3}+50\sqrt{x}\cdot\left(15\right)\right)}{15}$
$\left(pn-7\right)^3$
$\int_3^9\left(\pi\left(\frac{1}{x^3}+3\right)^2\right)dx$
$3x^2-2x-27=0$
$\int3\left(x^2+3x+5\right)^2\left(2x+3\right)\:dx$
$-13+-28+65+-56$
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