$4\left(r-7\right)$
$4^4-4x^3+3x^2+4x-4$
$-\left(-12\right)+\left(-8\right)-\left(-10\right)+\left(+7\right)$
$\lim_{x\to\infty}\left(\frac{ln\left(x^4+\:3\right)}{11x+4}\right)$
$\int\frac{cosx}{\left(5+2sinx\right)}dx$
$\left(mn^4-n^2\right)$
$\frac{3x^4}{12x^3}$
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