$2x-\sqrt{\left(-8x^3+30\right)}$

$\frac{dy}{dx}=\frac{-4y}{x\left(2+\ln\left(y\right)-\ln\left(x\right)\right)}$

$\left(-81\right)\cdot\left(-54\right)$

$\left(3ab+2b\right)^2-\left(3ab-2b\right)^2$

$\int x^4sin\left(8x^5\right)dx$

$\frac{4+2x}{x^2}$

$2\cdot\frac{11}{2}$