$\left(\frac{4ax^{\frac{2}{3}}}{b^2}+\frac{6b^2y^{\frac{4}{5}}}{x^{-4}}\right)^2$

$-8-7-5+4-3$

$\lim_{x\to0}\left(\frac{f'\left(x\right)}{g'\left(x\right)}\right)$

$\left(13-12\right)-\left(5-7\right)$

$\lim_{x\to+\infty}\left(1+\frac{6}{x}\right)^x$

$\lim_{x\to3}\left(\frac{-4.9x^2+44.1}{x-3}\right)$

$x+y+z=915$