$\left(x+1\right)\left(2x-2\right)$

$\frac{25d^8-64f^6}{5d^4+8f^3}$

$16a^2b+48a^3+80a^4b+96ab$

$\lim_{x\to\infty}\left(\:\frac{\left(\sqrt[2]{\left(1+x\right)}-1\right)}{x^2}\right)$

$\int_0^7\left(\frac{4}{9}\right)\pi\left(\frac{x+17.5}{14}\right)^2\left(8-x\right)dx$

$y+45=30$

$7^{2}\times7^{-8}$