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Popular >

integral of x^2-21

Solution

\int x^{2} - 21 d x

Solution

\frac{x ^{3}}{3} - 21 x + C

Solution steps

\int x^{2} - 21 d x

Apply the Sum Rule:

\int f (x) \pm g (x) d x = \int f (x) d x \pm \int g (x) d x

= \int x^{2} d x - \int 21 d x

\int x^{2} d x = \frac{x ^{3}}{3}

\int 21 d x = 21 x

= \frac{x ^{3}}{3} - 21 x

Add a constant to the solution

= \frac{x ^{3}}{3} - 21 x + C

Popular Examples

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Frequently Asked Questions (FAQ)

What is the integral of x^2-21 ?
The integral of x^2-21 is (x^3)/3-21x+C