$\left(\frac{5}{2}m^{3}p^{5}-\frac{5}{4}p^{3}\right)^{2}$

$665\:-\:667-664-666$

$\frac{d^2}{dx^2}\left(x^2e^{xy}\right)$

$x^2-4=3\cdot$

$\frac{\left(x^3+5x^2-9x+30\right)}{x+7}$

$9.8w-\left(7x-1\right)$

$\sin\left(\frac{\pi}{3}+x\right)=\frac{\sin\left(x\right)+\sqrt{3}\cos\left(x\right)}{2}$