$\frac{dy}{dx}-\frac{y}{x}=\left(ln\left(x\right)\right)^5$

$\left(5b^2-4a\right)^2$

$\frac { ( x ^ { 2 } ) ^ { 3 } ( x ^ { 3 } ) ^ { 2 } } { ( x ^ { 3 } ) ^ { 4 } }$

$y\left(1+x^2\right)^{\frac{1}{2}}dy=x\left(1+y^2\right)^{\frac{1}{2}}dx$

$\lim_{x\to-\infty}\left(\frac{e^x}{x^{-2}}\right)$

$2x-1-x+5$