$\left(6x^{2}+16x+8\right)+\left(3x+2\right)$

$\left(10a-2b\right)^3$

$\int_1^2\frac{\left(2x+2\right)\left(x-2\right)}{x}dx$

$\left(f-n-3z\right)\left(f-n-7z\right)$

$5b+6=21$

$\lim_{x\to0}\left(\frac{6sin\left(4x^3\right)}{-5x}\right)$

$\lim_{x\to\infty}\left(x^2+x^3\right)e^{2x}$