$\int\left(\frac{x+2}{2x^2+8x+2}\right)dx$

$\lim_{x\to\infty}\left(\frac{20x}{20x+7}\right)^{4x}$

$\left(-3\right)+\left(-2\right)-\left(-5\right)+\left(+10\right)-\left(+4\right)+\left(-2\right)$

$7y+14y^2$

$\lim_{x\to0}\left(\frac{1}{arctanx}\right)$

$\cos^2x+3\sin^2x-3$

$ey^4\sin x^2y$