What is the integral of x^2(1+x)^2 ?

The integral of x^2(1+x)^2 is (x^3)/3+(x^4)/2+(x^5)/5+C

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integral of x^2(1+x)^2

\int x^{2} (1 + x)^{2} d x

\frac{x ^{3}}{3} + \frac{x ^{4}}{2} + \frac{x ^{5}}{5} + C

Solution steps

\int x^{2} (1 + x)^{2} d x

Expand

x^{2} (1 + x)^{2} : x^{2} + 2 x^{3} + x^{4}

= \int x^{2} + 2 x^{3} + x^{4} 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^{3} d x + \int x^{4} d x

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

\int 2 x^{3} d x = \frac{x ^{4}}{2}

\int x^{4} d x = \frac{x ^{5}}{5}

= \frac{x ^{3}}{3} + \frac{x ^{4}}{2} + \frac{x ^{5}}{5}

Add a constant to the solution

= \frac{x ^{3}}{3} + \frac{x ^{4}}{2} + \frac{x ^{5}}{5} + C

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What is the integral of x^2(1+x)^2 ?
The integral of x^2(1+x)^2 is (x^3)/3+(x^4)/2+(x^5)/5+C