$4x^2-x>2$
$\frac{2sinx}{\left(cosx-1\right)\left(cosx+1\right)}$
$2\cot\sin^2$
$3x^2-6x^3+18x$
$\lim_{x\to-2}\left(\frac{2x-3}{x+3}\right)$
$\left(\frac{\frac{1}{3}\left(5\right)}{3}\right)\left(\frac{11}{4}\right)-0.6\left(\frac{1}{2}\right)$
$\int e^{7x+5}dx$
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