$b2\:+\:8b\:+\:15\:$

$p-q=11$

$\lim_{x\to0}\left(\frac{\left(1\left(x+h\right)-\left(x+h\right)-\left(x^2-x\right)\right)}{h}\right)$

$\frac{dx}{dy}+2yx=e^{-y^2}$

$\left(-\frac{14}{3}\right)\left(\frac{3}{5}\right)\left(-5\right)$

$\frac{d^4}{dx^4}\left(\frac{2}{1-x}\right)$

$\lim_{x\to0}\left(\frac{1}{\left(1+x\right)}-\frac{1}{ln\left(x\right)}\right)$