$\frac{1-\:sen\:b}{cos\:b}=\frac{cos\:b}{1+\:sen\:b}$
$46w+7+w-8$
$x2\:-\:\:1\:0x\:+\:2$
$\left(2c^3+24a^2b^2c+6abc^2-6abc^2\right)+10c^3$
$cos2a+6cos^2a=1$
$\frac{dp}{dt}=-\frac{2t}{\sqrt{p}}$
$\left(-8\right)^{-4}\cdot\left(-8\right)^{-2}\cdot\left(-8\right)^5$
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