$-t^2+8t+12$
$\int\left(sen^2\:\pi\:x\:cos^4\pi\:x\right)dx$
$5x+12+y-3+2y-5-4x$
$\left(v^2+2\right)^2$
$80\:+\:34$
$3\left(z+w\right)\:and\:3z+3w$
$25^x=5^{x^2-3}$
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