$2\left(2\right)^3-5\left(2\right)^2+4\left(2\right)-7$
$\int x^3sen4x\:dx$
$2\:csc\:a-4=0$
$5^{42}-5$
$3x^2\:+\:13x\:+\:14$
$\int\left(\frac{4x-1}{\left(x+2\right)\left(x-3\right)\left(x+4\right)}\right)dx$
$9m^2+12m+4m^2$
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