$\infty+70$
$\int_0^{\pi}\sin\left(2x\right)cos\left(3x\right)dx$
$2x^2+5x^2-1$
$ab^2\left(ab^2-2^a+ab^2\right)$
$n^2-n+1$
$\frac{1}{81}x^2-4>0$
$\int\:\:x^3\left(e^{-\frac{x}{3}}\right)dx$
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