$\left(2a^4+3b^2\right)^2$

$\frac{dy}{dx}=2x^2-x$

$\frac{x^{10}}{5+x^3}$

$\left(3x-5\right)+\left(x+2\right)$

$\lim_{x\to1}\left(\frac{\sqrt{x^2+15x+4}}{x-1}\right)$

$\lim_{y\to0}\left(\frac{y-3sin\left(y\right)cos\left(y\right)}{tan\left(y\right)-y}\right)$

$\lim_{x\to0}\left(x^2cot4xcsc5x\right)$