$8+2\cos\left(x\right)=9$
$-9\:\cdot100$
$\left(x-1\right)^2-3x\ge0$
$\int\frac{\left(3x+1\right)}{x^2-4x+3}\:dx$
$x^210x+25$
$\frac{x^3+4x+3}{x+3}$
$\frac{\cos\left(x\right)}{\sqrt{1-\cos^2\left(x\right)}}$
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