$\left(8\right)^2-\left(3x^3\right)$

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

$\sqrt{x^3+2x^2}+3x\sqrt{x+2}-5\sqrt{x^2\left(x+2\right)}$

$sin\left(\frac{2.5868}{2}\right)$

$\lim_{x\to\infty}ln\left(\frac{3x+1}{x^2+2x}\right)$

$3^3\cdot3^2\cdot3^1\cdot3^0\cdot3^{-1}3^2$

$_+81^1 y^2$