$\frac{9.8}{48.2}$

$\frac{x^4-x^3+x^2-3x-6}{x-2}$

$50^2+120^2.2\left(50\right)^2+\left(120\right)^2$

$\int a^3e^ada$

$\left(10y^{11}-5y\right)\left(10y^{11}+5y\right)$

$5^{\left(4\right)}\cdot5^{\left(-7\right)}$

$\lim_{x\to4}\left(\frac{x-4}{\left|x^2-16\right|}\right)$