$\left(x\:+\:5\right)m\:+\:\left(x\:+\:5\right)n\:$

$\lim_{x\to5}\left(\frac{x^3-9x^2+15x+25}{x^3+5x^2+2x-10}\right)$

$\int\:2x^2sec^2\left(x^3\:+\:1\:\right)dx$

$6\sin\left(2x\right)+3=3\left(\cos\left(x\right)+\sin\left(x\right)\right)^2$

$\int2x\left(x^2-2\right)^2dx$

$\left(1+y^2\right)dy=ydx$

$-30\cdot3$