$42+\:42+\:33+\:40+\:37$

$\frac{2x^3-5x^2-1}{x^2-4x+5}$

$\int\left(\frac{\left(x^2\right)}{\left(5x^3+1\right)}\right)dx$

$\lim_{n\to\infty}\left(\frac{3n^2-5}{n^2\sqrt{n^6+8}}\right)$

$\left(x^2+3x-4\right)\left(x^2-x-6\right)$

$\frac{dy}{dx}\left(\frac{y\left(y^3-2x^3\right)}{x\left(2y^3-x^3\right)}\right)$

$\lim_{x\to1}\left(\frac{lnx-x+1}{\sin\left(x^2-1\right)}\right)$