$\frac{110}{11}$

$\lim_{x\to\infty}\left(\frac{tanh\left(x\right)}{tan\left(x\right)}\right)$

$0.5\:\left(2x+3\right)$

$\left(2x-5ay\right)\left(2x+5ay\right)$

$18my^2\left(x-3mx^2+2\right)$

$\frac{dy}{dx}=\:-\:3\:cos\left(x+y\right)$

$-30+8\left(-5\right)+1-5-\left(-3\right)+\left(-3\right)+\left(-7\right)$