$-145-811$
$\int\left(v\right)^2\left(1-v\right)dv$
$7x-7y$
$\left(x^2-1\right)\cdot\left(x-1\right)$
$\sin^20\cos^20=1$
$-12+1+-10$
$\int\frac{x-2}{x^2-4x+7}dx$
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