$-8x-30=-12x-58$

$\left(6x-5+9x^3-2x^2\right)+\left(3x-6-8x^3+5^2\right)$

$\frac{d^2}{dx^2}\left(x^2+y^2=25\right)$

$3-\left(2-3\right)$

$\frac{dy}{dx}=\frac{x-1}{\sqrt{x+1}}$

$\lim_{x\to5}\left(\frac{x}{\sqrt{2+x}-\sqrt{2}}\right)$