$724 ^ { 2 } \cdot 3 x$

$-6k\:+\:7k$

$+\frac{2}{6}a^3b$

$x^3-x^2-2x$

$\left(-\frac{452}{31200}\right)+\left(+\frac{3248}{3307.5}\right)+\left(+\frac{592}{1575}\right)+\left(-\frac{212}{360}\right)+\left(-\frac{148}{985.359375}\right)+\left(\frac{168}{2450}\right)+\left(\frac{136}{11088}\right)$

$2^{-2}m^{-3}$

$\int x^6\sqrt{x^7+6}dx$