$\left(\cos\left(x\right)\right)\left(\tan\left(x\right)+\sin\left(x\right)\cot\left(x\right)\right)$
$\lim_{x\to1}\left(\frac{x^2+x-6}{x-2}\right)$
$x^4-6x^3+5x^2$
$2x^2+10x+8$
$x^2+\frac{30}{4}x$
$\int2x^3.in\left(x\right)\:dx$
$\left(4a-b\right)^5$
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