$\int\frac{3x^{2}+3}{\sqrt{x^{3}+3x+1}}dx$

$\left(3x^2-5\right)^2-\left(2x^3+1\right)x\left(-5x+1\right)$

$\frac{600}{25}$

$a\left(n+6\right)+n+6$

$\int\left(\cot\left(x\right)\sin\left(x\right)+1\right)\csc\left(x\right)dx$

$7\left(2x-1\right)-3x\le2\left(x+1\right)-9$

$\left(5x+2\right)\left(x-1\right)$