What is the integral of 4x(2x^2+5)^6 ?

The integral of 4x(2x^2+5)^6 is 1/7 (2x^2+5)^7+C

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integral of 4x(2x^2+5)^6

\int 4 x (2 x^{2} + 5)^{6} d x

\frac{1}{7} (2 x^{2} + 5)^{7} + C

Solution steps

\int 4 x (2 x^{2} + 5)^{6} d x

Take the constant out:

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

= 4 \cdot \int x (2 x^{2} + 5)^{6} d x

Apply u-substitution

: \int \frac{u ^{6}}{4} d u

= 4 \cdot \int \frac{u ^{6}}{4} d u

Take the constant out:

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

= 4 \cdot \frac{1}{4} \cdot \int u^{6} d u

Apply the Power Rule

: \frac{u ^{7}}{7}

= 4 \cdot \frac{1}{4} \cdot \frac{u ^{7}}{7}

Substitute back

u = 2 x^{2} + 5

= 4 \cdot \frac{1}{4} \cdot \frac{( 2 x ^{2} + 5 ) ^{7}}{7}

Simplify

4 \cdot \frac{1}{4} \cdot \frac{( 2 x ^{2} + 5 ) ^{7}}{7} : \frac{1}{7} (2 x^{2} + 5)^{7}

= \frac{1}{7} (2 x^{2} + 5)^{7}

Add a constant to the solution

= \frac{1}{7} (2 x^{2} + 5)^{7} + C

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What is the integral of 4x(2x^2+5)^6 ?
The integral of 4x(2x^2+5)^6 is 1/7 (2x^2+5)^7+C