$-8r+8r>8$
$\frac{x-1}{x+5}-2\ge0$
$\lim_{x\to0}\left(\frac{\sin\left(x\right)+x+1}{x^2+2x}\right)$
$\cos\left(20.8x\right)-\cos\left(12.6x\right)$
$\lim_{x\to2}\left(\frac{\sqrt{4x-7}-\sqrt[3]{4x+1}}{x-2}\right)$
$\left(m^2x^3+6\right)\left(m^2x^3-2\right)$
$-12+35-32+2\left(-\frac{3}{-2}\right)$
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