$\left(a^{\frac{2}{3}}+x^{\frac{2}{3}}\right)^3$

$\lim_{x\to-\infty}\:\left(xsin\right)\left(\frac{\pi}{x}\right)$

$3ab^2-2a^2b-a^2b^2;\:a=-3;\:b=-2$

$x^2>x+6$

$\lim_{x\to0}\left(\frac{\sin\left(a\right)x}{\sin\left(b\right)x}\right)$

$5\left(5-y\right)-3y$

$\left(6z+7\right)+\left(7z+8\right)$