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$\int\left(3a^2-a^2\right)da$
Learn how to solve integral calculus problems step by step online. Find the integral of 3a^2-a^2. Find the integral. Combining like terms 3a^2 and -a^2. The integral of a function times a constant (2) is equal to the constant times the integral of the function. Apply the power rule for integration, \displaystyle\int x^n dx=\frac{x^{n+1}}{n+1}, where n represents a number or constant function, such as 2.