What is the integral of (14x+3)sqrt(7x^2+3x) ?

The integral of (14x+3)sqrt(7x^2+3x) is 2/3 (7x^2+3x)^{3/2}+C

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integral of (14x+3)sqrt(7x^2+3x)

\int (14 x + 3) 7 x^{2} + 3 x d x

\frac{2}{3} (7 x^{2} + 3 x)^{\frac{3}{2}} + C

Solution steps

\int (14 x + 3) 7 x^{2} + 3 x d x

Apply u-substitution

: \int u d u

= \int u d u

Apply the Power Rule

: \frac{2}{3} u^{\frac{3}{2}}

= \frac{2}{3} u^{\frac{3}{2}}

Substitute back

u = 7 x^{2} + 3 x

= \frac{2}{3} (7 x^{2} + 3 x)^{\frac{3}{2}}

Add a constant to the solution

= \frac{2}{3} (7 x^{2} + 3 x)^{\frac{3}{2}} + C

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What is the integral of (14x+3)sqrt(7x^2+3x) ?
The integral of (14x+3)sqrt(7x^2+3x) is 2/3 (7x^2+3x)^{3/2}+C