$\frac{1+tan^2}{1+cot}$
$17-\left(+8\right)\left(4\right)$
$\frac{dy}{dx}=e^{5y+4x}$
$6x=4x$
$\frac{x^3+8x^2-7}{x+3}$
$64y^2\:+\:16y\:+1$
$\ln x^2+2x^4$
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