What is the integral from 7 to 9 of x^2+2x-2 ?

The integral from 7 to 9 of x^2+2x-2 is 470/3

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integral from 7 to 9 of x^2+2x-2

\int_{7}^{9} x^{2} + 2 x - 2 d x

\frac{470}{3}

Decimal

156.66666 \dots

Solution steps

\int_{7}^{9} x^{2} + 2 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_{7}^{9} x^{2} d x + \int_{7}^{9} 2 x d x - \int_{7}^{9} 2 d x

\int_{7}^{9} x^{2} d x = \frac{386}{3}

\int_{7}^{9} 2 x d x = 32

\int_{7}^{9} 2 d x = 4

= \frac{386}{3} + 32 - 4

Simplify

\frac{386}{3} + 32 - 4 : \frac{470}{3}

= \frac{470}{3}

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What is the integral from 7 to 9 of x^2+2x-2 ?
The integral from 7 to 9 of x^2+2x-2 is 470/3