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

The integral of ((sqrt(x)+3)^2)/(sqrt(x)) is 2/3 (sqrt(x)+3)^3+C

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

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

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

Solution steps

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

Apply u-substitution

: \int 2 u^{2} d u

= \int 2 u^{2} d u

Take the constant out:

\int a \cdot f (x) d x = a \cdot \int f (x) d x

= 2 \cdot \int u^{2} d u

Apply the Power Rule

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

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

Substitute back

u = x + 3

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

Simplify

2 \cdot \frac{( x + 3 ) ^{3}}{3} : \frac{2}{3} (x + 3)^{3}

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

Add a constant to the solution

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

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