$\lim_{x\to\infty}x^3\left(\frac{3}{x}-\sin\left(\frac{3}{x}\right)\right)$
$\left(x-1\right)\left(c-2\right)$
$\left(9x^2\:y+8x^3\:y^2\:z-5\:\right)-\:\left(-9x^2\:y^3-3y\right)$
$x^2-2x-24=0$
$x^3-729$
$2\cos\left(x\right)=\cos\left(2x\right)$
$4x^2-8x-5$
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