$x^2+x+8$
$\int\frac{tan^2x}{senx}dx$
$\left(x^2+8\right)\left(x^2-13\right)$
$-1^4-3\left(-1^3\right)+2\left(-1\right)\left(-\frac{1}{2}\right)-3\left(2\right)\left(-\frac{1}{2}\right)$
$\int\left(\frac{e^{2x}+1}{e^{2x}+1}\right)dx$
$-8+-10-+20+-9$
$x^4+3x^2+2$
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