$\left(+5\right)\cdot\left(-2\right)\cdot\left(-11\right)$
$sen^2\theta\:-2sen\theta\:=0$
$\int\frac{5y}{y^2+5}dy$
$4+7b^2+2+2b^2+3b$
$e^{2x}-12e^x+35=0$
$\lim_{x\to1}\left(\frac{3x^4-4x^3+5}{\left(x+1\right)^2}\right)$
$\lim_{h\to0}\frac{\left(\left(\frac{3}{x+h}\right)-\frac{3}{x}\right)}{h}$
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