$\sin^2\left(b\right)\cdot\sec\left(b\right)\cdot\cos\left(b\right)$
$-5x^2-5x+100$
$\frac{\cos\left(x\right)}{1+\sin\left(x\right)}-\tan\left(x\right)=\sec\left(x\right)$
$\int-4x^{-3}dx$
$\lim_{x\to2\:}7-3x^2-x^3$
$108sinx-120sin2x=-50$
$8y+9=8y-3$
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