$\frac{\sec\:^3\left(x\right)+4\sec^2\left(x\right)+4}{\sec\left(x\right)+2}$

$600+68$

$\frac{5\sqrt[8]{x^3}}{\sqrt{2}}-\frac{4}{\sqrt{5x^2}}+\frac{3}{\sqrt[7]{2x^5}}-6$

$\frac{4\left(x+16\right)}{x+4}$

$\frac{25-x^3}{5+x}$

$x4-3x^2+2x-1\cdot x+2$

$\int_1^{\:\infty\:}\frac{1}{8+x+\frac{1}{x}}\:dx$