$\int\frac{x}{\sqrt{8x+x^2}}dx$
$\left(4x^2+6z\right)\left(4x^2+5yz\right)$
$2ac-2ad+3bc-3bd$
$\lim_{x\to\infty}\left(\frac{x^4-x^2+4}{x-5}\right)$
$\left(1-cos^2\theta\right)\left(1+cot^2\theta\right)=1$
$sin\left(x\right)+\frac{x}{2}$
$7x^2+10x-8$
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