$y^2+y+0.25$
$\:3x\:+\:2\:\ge\:8$
$\left(7x^3+9y^4\right)^2$
$e^y=\frac{1}{2}e^x+4$
$\int\frac{1-senx}{1-sen^2x}dx$
$16x^2+10x+1$
$4m^2n-9m^2n$
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