$3\sin\left(x\right)-\cos\left(2x\right)+2$
$\left(4x\:+\:6y\right)\left(4x\:-\:6y\right)$
$tan\left(x\right)-\frac{sec^2x}{tan\left(x\right)}$
$-2\left(5c+9d\right)+4\left(-7c+5d\right)+5$
$\int\left(160+t\right)\left(24\right)dt$
$\left(1-x^2\right)\left(16x^4-8x^2+1\right)$
$-3x^2+2x+1$
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