$3x^2+2x-3=0$
$\tan\left(x\right)\cos\left(x\right)-\sin\left(x\right)\cos^2\left(x\right)$
$\int\sin\left(mx\right)\sin\left(nx\right)dx$
$\frac{27x^3-27x^2+9x-4}{3x-1}$
$cos2\left(t\right)=1-2sin\left(t\right)^2$
$2x-12+3x$
$\lim_{x\to\infty}\frac{5x^2+3x-1}{2x^4+3x-4}$
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