$4\left(\frac{x}{8}-2\right)=\frac{1}{4}\left(2x-12\right)$

$\lim_{x\to1}\left(\frac{\sin\left(\sqrt{x-1}\right)}{x^2-1}\right)$

$ax+2ax$

$\lim_{x\to0}\left(\frac{x^2\cos\left(x\right)}{\sin^20.5x}\right)$

$\left(5x+\frac{1}{2}\right)^2$

$5 ( 2 ) ( \sqrt { 3 } ) ^ { 4 }$

$f\left(x\right)=\frac{x^4}{4}+\frac{3x^2}{2}-2-\frac{3}{x}+\frac{6}{x^3}$