$\left(4x^2+9x+3\right)\:\left(-2x^2+2x-3\right)$
$-5x^2\:-7x^3\:-3x^3\:+5x^2$
$120x+100\ge1000$
$\int\left(\tan x\right)\left(\sec x+2\right)dx$
$5x^2-9+46$
$\cot^2\left(x\right)=\cos^2\left(x\right)$
$\frac{3x-10}{x-2}\le1$
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