What is the integral of (x^2-1)^9x ?

The integral of (x^2-1)^9x is 1/20 (x^2-1)^{10}+C

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integral of (x^2-1)^9x

\int (x^{2} - 1)^{9} x d x

\frac{1}{20} (x^{2} - 1)^{10} + C

Solution steps

\int (x^{2} - 1)^{9} x d x

Apply u-substitution

= \int \frac{u ^{9}}{2} d u

Take the constant out:

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

= \frac{1}{2} \cdot \int u^{9} d u

Apply the Power Rule

= \frac{1}{2} \cdot \frac{u ^{10}}{10}

Substitute back

u = x^{2} - 1

= \frac{1}{2} \cdot \frac{( x ^{2} - 1 ) ^{10}}{10}

Simplify

\frac{1}{2} \cdot \frac{( x ^{2} - 1 ) ^{10}}{10} : \frac{1}{20} (x^{2} - 1)^{10}

= \frac{1}{20} (x^{2} - 1)^{10}

Add a constant to the solution

= \frac{1}{20} (x^{2} - 1)^{10} + C

What is the integral of (x^2-1)^9x ?
The integral of (x^2-1)^9x is 1/20 (x^2-1)^{10}+C