$$\int\left(-\frac{4x^3}{\sqrt{4x^4+3}}\right)dx$$

$$\frac{90}{x}=\left(-18\right)$$

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

$$\int\cos^3\left(4f\right)df$$

$$-30-47,3$$

$$\left(\frac{2}{5}x^2+3y^3\right)\left(\frac{2}{5}x^2-3y^3\right)$$

$$\int cos\left(x\right)csc^7\left(x\right)dx$$