$\left(-9\right)\cdot16+-15$
$\cot\left(-a\right)\cdot\cos\left(-a\right)+\sin\left(-a\right)=-\csc\left(a\right)$
$\int\sqrt{x}\left(x+x^{-1}\right)dx$
$\left(c-2d^{5x}\right)^4$
$\frac{t^4-t^4}{x-y}$
$3\left(2\right)+2\left(3\right)-6\left(2\right)\left(3\right)$
$3x-\frac{1}{2}>6$
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