$\left(7p\right)^4$

$\lim_{x\to0}\left(\frac{\sqrt[3]{1+x}-1}{x^2}\right)$

$\left(cosa-b\right)^2+\left(sina-sinb\right)^2$

$\frac{d^2y}{dx^2}+4y=\tan\left(2z\right)$

$\int\left(\frac{z^3}{\left(1-2z^4\right)^5}\right)dx$

$\left(z+7m\right)^2$

$4m\left|2\right|-4m+1$