$5x^2\le-20x-4$
$tan2xcos2x\:+\:cot2xsin2x$
$3a^2-5a+2$
$\frac{8x^3-3x^3-5}{x-2}$
$\frac{28}{y}-6=-10$
$3q^2-24q+80$
$\int\frac{x-4}{x\left(x-1\right)}dx$
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