$\int\:\frac{e^x}{10e^x+7}dx$
$4\cdot2\frac{1}{2}$
$538.12+324.06$
$x^2-9x+27$
$\int\left(5x^2+7x+2\right)\cdot\cos\left(3x\right)dx$
$( 14 x ^ { 4 } - 7 x ^ { 3 } + ( 7 x )$
$\lim_{x\to2}\left(5x^2-3x+2\right)$
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