$\frac{\csc^2\left(x\right)}{\cot\left(x\right)}=\sec\left(x\right)$
$f\left(x\right)=\left(x^4+1\right)\left(x^4-1\right)$
$\frac{dy}{dx}\left(2y+1\right)=6x+3$
$6xp+2xq-2yp-4yq+4zp+8zq$
$12\left[x+2\right]^2=48$
$-5c+2f^2-8c+3f^2$
$\int sin\left(-6x\right)dx$
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