$3sec^2x-5secx-2=0$
$\frac{v^2-7v-30}{v^2-5v-24}$
$\int\left(5x^3-7\right)^2dx$
$\:1\:-\:sen2x\:=\:cos2x$
$\frac{x^{-7}y^{-2}z}{x^{14}}$
$\frac{2n}{n^n}x^n$
$\frac{14x^4y^7}{6x^5y^4}$
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