$-8x^2+3x-7=0$
$\left(\frac{1}{2}\right)^0x\left(\frac{1}{2}\right)^{10}$
$\lim\:_{x\to\:4}\left(\frac{3\sqrt{5+x}}{2-\sqrt{8-x}}\right)$
$4a+2y^3$
$\int\left(\frac{e^x}{12+e^x}\right)dx$
$\sin\left(2x+\frac{\pi}{2}\right)=\cos\left(2x\right)$
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