$\left(7a^2-2b^2\right)^2$

$\lim_{m\to0}\left(\frac{\left(x+m\right)^3-x^3}{m}\right)$

$-15y^4=\left(d\right)\left(3y^2\right)$

$-\left(8m+32\right)$

$\frac{5^2-13\cdot\left(5\right)+40}{5^2-21\cdot\left(5\right)+80}$

$\int5\left(9-x\right)^7\:dx$

$tan\left(2x\right)=1$