$-\frac{120}{-10}$
$9n-12n^2$
$\frac{\tan\left(x\right)^2+2}{x+x^2}$
$\int x^2\left(2x\ln\left(x\right)+2x\right)dx$
$7x+2x+5x$
$\int\:x^4\left(\frac{7x^4}{3}-\frac{1}{2}x-\frac{2}{3}\right)dx$
$\left(-1\right)^{45}$
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