$4+7b^2+2+2b^2+3b$
$\lim_{x\to0}\left(\frac{10x^3}{x^2-1}\right)$
$5v-v-v$
$\int_0^{\frac{-\pi}{2}}\left(\frac{1-sec^2x}{cscx\cdot sen^2x}\right)dx$
$x+10<12$
$216x^9-125y^6$
$\int\frac{2x^2+2x+2}{x+2}dx$
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