$-3-2-8-7-20-15-9$
$\frac{x^{4}+4x^{3}+6x^{2}-7x+2}{x^{2}-2x-1}$
$\int\frac{sin\left(2t+9\right)}{cos^2\left(2t+9\right)}dt$
$\frac{2-\csc\left(^2\right)x}{\csc\left(^2\right)x}$
$\frac{\frac{v}{5}}{\frac{1}{0}}$
$\int-30x^2\cos\left(5x^3+2\right)dx$
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