What is the integral of (2x^2+6)^2 ?

The integral of (2x^2+6)^2 is (4x^5)/5+8x^3+36x+C

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integral of (2x^2+6)^2

\int (2 x^{2} + 6)^{2} d x

\frac{4 x ^{5}}{5} + 8 x^{3} + 36 x + C

Solution steps

\int (2 x^{2} + 6)^{2} d x

Expand

(2 x^{2} + 6)^{2} : 4 x^{4} + 24 x^{2} + 36

= \int 4 x^{4} + 24 x^{2} + 36 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 4 x^{4} d x + \int 24 x^{2} d x + \int 36 d x

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

\int 24 x^{2} d x = 8 x^{3}

\int 36 d x = 36 x

= \frac{4 x ^{5}}{5} + 8 x^{3} + 36 x

Add a constant to the solution

= \frac{4 x ^{5}}{5} + 8 x^{3} + 36 x + C

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What is the integral of (2x^2+6)^2 ?
The integral of (2x^2+6)^2 is (4x^5)/5+8x^3+36x+C