$\sqrt{2.414+3}-2$

$\frac{d^2}{dx^2}\left(-\frac{1}{3}x^{-3}+\frac{1}{6}x^{-2}-x^4\right)$

$-3\left(-10\right)\left(5\right)\left(1\right)\left(2\right)\left(-5\right)$

$-\int\left(e^{-x}2x\right)dx$

$\lim_{x\to\frac{\pi}{2}}\left(\frac{sen^2\left(2x\right)}{1-sin\left(x\right)}\right)$

$8\left(5x-2\right)$

$\int\frac{x^2}{\sqrt{3-4x^2}}dx$