$$\int\left(3x^2+4x\right)ln\left(x+2\right)dx$$

$$\frac{dy}{dx}\left(15x=15x+5y^3+3y^5\right)$$

$$h ( t ) = \sqrt { t } ( 1 - t ^ { 2 } )$$

$$16y^2-40y+25$$

$$\left(2a^3-5b^7\right)^2$$

$$x^3-9x^2+27-27$$