$-50-50-50-50-50-50-50$
$\frac{d}{dx}+2y=2e^{-x}sinx$
$\tan\left(x\right)\cdot\cot\left(x\right)+\tan\left(x\right)=\sec^2x$
$\frac{2\sin\left(x\right)}{\sqrt{3}\sin\left(x\right)+\cos\left(x\right)}=1$
$-2=-\left(n-8\right)$
$\lim_{x\to-2}\frac{x^2+4x+4}{x^2-4}$
$5+3x\:\ge4-x$
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