$y=2x^2+24x+70;\:x=7$
$\sqrt[3]{8.6}$
$\left(4+5i\right)-\left(1+3i\right)$
$-7x\ge-56$
$\int_{\frac{-\pi}{2}}^{\frac{3\pi}{2}}\left(\sqrt{16-16\cos^2t}\right)dt$
$\frac{80.4\sin20}{\sin25}$
$\frac{2x^2-2x+3}{x+1}$
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