$25x-12y+5+19x+34+x-6y\:\:14x\:3y+51$

$\int\frac{3x^2+x+2}{x^3-x^2+x-1}dx$

$y=\left(x+7\right)\left(x+5\right)$

$\left(0.2a^4b-5m^3\right)^2$

$-\left(-1-2-3-4\right)+\left(-5-6-7-8\right)$

$\left(1+sinx\right)\left(1-sinx\right)=\frac{1}{sec^2x}$

$\frac{dy}{dx}=\frac{4}{\sqrt{x+2}}y\left(0\right)=5$