- $ \\\int {{x^2}} dx = \\\frac{{{x^3}}}{3}$.
- $ \\\int {{x^2}} dx = 2x + C$.
- $ \\\int {{x^2}} dx = \\\frac{{{x^2}}}{2} + C$.
- $ \\\int {{x^2}} dx = \\\frac{{{x^3}}}{3} + C$.