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- $ \\\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$.