$34+\left(-17-\left(+6\right)\right)-\left(-15\right)$
$\int-3x\:\cos\left(4x\right)\:dx$
$370+370$
$\left(-5a^2x+2by^2\right)^3$
$\int_{-\infty}^{-9}\left(\frac{80}{x^2-64}\right)dx$
$\cos\left(-2x\right)$
$5\cdot5\cdot\left(-10\right)$
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