$$22.89-48.4$$

$$x2+4x-5x+2x$$

$$\frac{3x+9}{2x+1}+2$$

$$\frac{d}{dx}\left(\sqrt[3]{\frac{\left(5x+1\right)\left(x+4\right)^2}{\left(x^4+5\right)\left(x+8\right)}}\right)$$

$$\int_0^{\infty}\left(\frac{6}{n+8}\right)dx$$

$$121w^2-66w+9$$

$$3x^2-2x\ge2x^2+15$$