What is the integral from 0 to 2 of 5x(x-6) ?

The integral from 0 to 2 of 5x(x-6) is -140/3

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integral from 0 to 2 of 5x(x-6)

\int_{0}^{2} 5 x (x - 6) d x

- \frac{140}{3}

Decimal

- 46.66666 \dots

Solution steps

\int_{0}^{2} 5 x (x - 6) d x

Take the constant out:

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

= 5 \cdot \int_{0}^{2} x (x - 6) d x

Expand

x (x - 6) : x^{2} - 6 x

= 5 \cdot \int_{0}^{2} x^{2} - 6 x 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

= 5 (\int_{0}^{2} x^{2} d x - \int_{0}^{2} 6 x d x)

\int_{0}^{2} x^{2} d x = \frac{8}{3}

\int_{0}^{2} 6 x d x = 12

= 5 (\frac{8}{3} - 12)

Simplify

5 (\frac{8}{3} - 12) : - \frac{140}{3}

= - \frac{140}{3}

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What is the integral from 0 to 2 of 5x(x-6) ?
The integral from 0 to 2 of 5x(x-6) is -140/3