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

$2-7+11+2-8-4+2$

$\frac{dy}{dx}=x^5\left(y-2\right)$

$\cosh\left(u+v\right)=\cosh\left(u\right)+\sinh\left(v\right)+\sinh\left(u\right)\sinh\left(v\right)$

$\int\frac{3}{x^2+4}dx$

$\left(\frac{1}{2}a-\frac{3}{4}a^2\right)^2$

$\frac{\left(-2x+3\right)\left(-x+1\right)}{\left(2-x\right)^2}$