$\frac{12yx^4}{10yx^8}$

$\left(5-10a\right)^3$

$\int\left(\frac{\sin\left(g\right)}{2+\cos\left(g\right)}\right)dg$

$\int\left(x^3+2\right)\frac{1}{\left(x^2+1\right)}dx$

$\lim_{x\to1.05}\left(\frac{4x^2-x-3}{x-1}\right)$

$1\cdot e^x\:+x\cdot e^x$

$\left(x^2+4x+4\right)\left(x+1\right)$