$\int\frac{2x}{\sqrt{x^2-6x+45}}dx$
$\left(-\frac{1}{5}m^4n^2+\frac{3}{2}m^4n\right)\left(\frac{1}{5}m^4n^2+\frac{3}{2}m^4n\right)$
$-7\:+\:9\:\cdot\:-3\:+\:1$
$44.08-20$
$1+216x^9$
$\int\left(6x^2-9x+3\right)e^{-x}dx$
$8.50-3.40$
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