$3\sec\left(x\right)^3-2\tan\left(x\right)^2-4$
$\sqrt[3]{81}^7v$
$4x+4+-9x+12y-10y$
$\int\left(\frac{\left(x^4\right)}{x^5-4}\right)dx$
$-3y^2+4=2x^2$
$\left(\frac{1}{7}m-4\right)\left(\frac{1}{7}m+4\right)$
$\frac{d^2}{dx^2}\left(-x^2+e^{-x+2}\right)$
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