$\int-\frac{7}{64+t^2}dt$
$13\left(-5q-4\right)$
$\left(-8a^2-15\right)\left(-8a^2+19\right)$
$\log_b\left(x^9y^4z\right)$
$4\sin\left(3x\right)\cos\left(3x\right)$
$\frac{tanxcosx}{\sqrt{1-cos^2x}}\:$
$2x^2\left(x+1\right)-x+1=0$
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