$\lim_{x\to\frac{\pi}{2}}\left(\frac{8-\tan\left(x\right)}{\sin\left(x\right)+10}\right)$
$\cos^20+\sec^20=2\sin0$
$2x^2-4x-5=0$
$\left(a^2-2b\right)^3\left(a-b\right)^2$
$-m-6m=0$
$x^2-27x+180$
$\frac{d}{dx}\left(3x^2sen\left(z\right)+2yz=4x+y^2\right)$
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