$\sin\left(x\right)\left(1-\cot\left(x\right)\right)=\sin\left(x\right)+\cos\left(x\right)$
$x^2-6x-11=0$
$\left(4mn^2\right)\left(-15y^4\right)$
$\int\left(\sin\left(ax\right)\right)^3dx$
$27a^2\:+\:42a\:-\:5$
$6x^2-6x+8$
$\frac{y^3-6^y+5}{y^2+3y-2}$
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