$6n-20=3n+7$
$-8a-5a$
$\int\frac{6x-1}{4x^2-4x+10}\:dx$
$2w^2-w-1$
$\left(3-z^2\right)\left(z^3-5z+3\right)$
$-120-\left(-64-7\right)$
$\int x\cdot\sec\left(6x^2\right)dx$
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