$\int\cot^2\left(3t\right)\csc^2\left(3t\right)dt$
$2x-5\le4x$
$\sqrt[5]{\frac{4x^4}{y^2}}$
$20x^2+51x+28$
$\int_{-2}^42xdx$
$\cos^2\left(a\right)+\sin^2\left(a\right)$
$sin^2x-sinx-2=0$
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