$\frac{125z^9+x^{12}}{5z^3+x^4}$
$4\left(5y^2+3y\right)$
$2\:+\:3\:sen\:x\:=\:1\:+\:sen\:x$
$\left(3x^2-2x+1\right)\left(-2x+3\right)$
$16x^2+8h-3=0$
$\int e^{4x^3}dx$
$4x^4-36y^4m$
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