$a^2+10a+100$
$\lim_{x\to\frac{\pi}{2}}\left(\frac{1+sec\left(x\right)}{tan\left(x\right)}\right)$
$\cos\left(2\right)^2-\sin\left(2\right)^2=2\cos\left(2\right)^2$
$-\frac{1}{2}\left(\left(-10x-9y\right)\right)$
$\:exacta\left(2x\:-\:1\right)dx\:+\:\left(3y\:+\:7\right)\:dy\:=\:0$
$\sqrt{10}-\sqrt{40x^4}+\sqrt{40x^4y^8}$
$\csc\left(x\right)\left(2\sec\left(x\right)+1\right)=0$
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