What is the integral from 0 to 1.25 of x^3+2x^2-3 ?

The integral from 0 to 1.25 of x^3+2x^2-3 is -1.83756…

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integral from 0 to 1.25 of x^3+2x^2-3

\int_{0}^{1.25} x^{3} + 2 x^{2} - 3 d x

- 1.83756 \dots

Solution steps

\int_{0}^{1.25} x^{3} + 2 x^{2} - 3 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_{0}^{1.25} x^{3} d x + \int_{0}^{1.25} 2 x^{2} d x - \int_{0}^{1.25} 3 d x

\int_{0}^{1.25} x^{3} d x = 0.6103515625

\int_{0}^{1.25} 2 x^{2} d x = 1.30208 \dots

\int_{0}^{1.25} 3 d x = 3.75

= 0.6103515625 + 1.30208 \dots - 3.75

Simplify

= - 1.83756 \dots

What is the integral from 0 to 1.25 of x^3+2x^2-3 ?
The integral from 0 to 1.25 of x^3+2x^2-3 is -1.83756…