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Popular >

integral of (2x+6)^2

Solution

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

Solution

\frac{4 x ^{3}}{3} + 12 x^{2} + 36 x + C

Solution steps

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

Expand

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

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

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

\int 24 x d x = 12 x^{2}

\int 36 d x = 36 x

= \frac{4 x ^{3}}{3} + 12 x^{2} + 36 x

Add a constant to the solution

= \frac{4 x ^{3}}{3} + 12 x^{2} + 36 x + C

Graph

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\int \frac{1}{( 5 - 3 cos ( x ) )} d x

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\int x^{4} \cdot 4 x^{5} - 7 d x

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\int x^{\frac{3}{2}} \cdot ln (x) d x

integral of (x^3+x-2)/(x^3+x)

\int \frac{x ^{3} + x - 2}{x ^{3} + x} d x

Frequently Asked Questions (FAQ)

What is the integral of (2x+6)^2 ?
The integral of (2x+6)^2 is (4x^3)/3+12x^2+36x+C