What is the integral from 2 to 4 of x^2(x-1) ?

The integral from 2 to 4 of x^2(x-1) is 124/3

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integral from 2 to 4 of x^2(x-1)

\int_{2}^{4} x^{2} (x - 1) d x

\frac{124}{3}

Decimal

41.33333 \dots

Solution steps

\int_{2}^{4} x^{2} (x - 1) d x

Expand

x^{2} (x - 1) : x^{3} - x^{2}

= \int_{2}^{4} x^{3} - x^{2} 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_{2}^{4} x^{3} d x - \int_{2}^{4} x^{2} d x

\int_{2}^{4} x^{3} d x = 60

\int_{2}^{4} x^{2} d x = \frac{56}{3}

= 60 - \frac{56}{3}

Simplify

60 - \frac{56}{3} : \frac{124}{3}

= \frac{124}{3}

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What is the integral from 2 to 4 of x^2(x-1) ?
The integral from 2 to 4 of x^2(x-1) is 124/3