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Popular >

integral of x^2+2x

Solution

\int x^{2} + 2 x d x

Solution

\frac{x ^{3}}{3} + x^{2} + C

Solution steps

\int x^{2} + 2 x 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 2 x d x

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

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

= \frac{x ^{3}}{3} + x^{2}

Add a constant to the solution

= \frac{x ^{3}}{3} + x^{2} + C

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\int \frac{1}{( x - 9 ) ( x ^{2} + 16 )} d x

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\frac{d}{d x} (\frac{x ^{2} + 5}{x - 2})

Frequently Asked Questions (FAQ)

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