$\int\left(x^4+x\right)^{10}\left(4x^3+1\right)dx$

$\left(9b^2+d\right)^3$

$\frac{36-y^2}{6+y}$

$\left(\sqrt{x+y}\cdot\sqrt{x-y}\right)$

$\lim_{x\to0}\left(\frac{3x+3sin\left(x\right)}{4x+4cosx}\right)$

$\frac{1+\cos\left(2x\right)}{1-cos\left(2x\right)}=-\csc^2\left(x\right)-1$

$60+-1$