$60y^4+30y^3+40y$

$\lim_{x\to2}\left(\frac{1-sin\left(x\right)}{csc\left(x\right)}\right)$

$\int\frac{in\left(\left|x\right|\right)}{\sqrt{x}}dx$

$\left(5a^3-3\right)+\left(2a^2-3a^3\right)$

$1+\cot^2a$

$\frac{x^2}{x^5}$

$\left(9x^{3}+2x^{2}+11x+13\right)+\left(-10x^{3}+14x^{2}+3x+7\right)$