$7t^2-28t+28$
$\frac{\sin^2\left(120\right)-\cos^2\left(330\right)-\cot\left(225\right)}{\csc\left(90\right).\csc\left(210\right)}$
$\frac{dy}{dx}\:y=4x^3$
$\int k\left(x-2\right)dx$
$cos^44x-sin^44x=cos8x$
$6m^2+24m^2$
$4x+6<15-25x$
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