$-12+5x<-x$
$sen^2x\:+\frac{1}{tan^2x}$
$\left(-\frac{2}{3}x^3+\frac{b}{2}\right)^2$
$\int\left(\left(\frac{8x+10}{2x^2+5x+2}\right)\right)dx$
$\left(9m+8n^7\right)^2$
$9\cdot2\cdot\left(-2\right)$
$\left(2x^2+3x-0\right)-\left(4x^2-5x+7\right)+\left(x-4\right)$
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