$\frac{\csc\left(x\right)}{\cos\left(x\right)}\left(1-\sin^2\left(x\right)\right)$
$\left(m-12\right)\left(m-9\right)$
$\left(2x-1\right)\left(x-6\right)$
$\left(v^2\right)+3v-4$
$16 x ^ { 2 } - 56 x + 49$
$\int\cos\left(-10y\right)\sin\left(3y\right)dy$
$\frac{x^2+5}{x+2}$
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