$2\cot^2x-\cot x-5=0$
$\int9x^8e^{5x^9}dx$
$\int\left(4x+7\right)\left(sinx\right)dx$
$8-\frac{-10}{2}$
$\lim_{x\to1}\left(\frac{sin\left(2x-2\right)}{tan\left(x-1\right)}\right)$
$\frac{\left(-3\right)^{-2}}{\left(-3\right)^{-5}}$
$x+1+2x+x+4$
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