- #1

- 8

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## Homework Statement

∫x

^{2}(√2+x)

## Homework Equations

∫f(x) from a to b = f'(b) - f'(a)

and substitution rule

## The Attempt at a Solution

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I decided to make u=√(2+x), du= 1/2√(2+x) and when solving dx, i got dx= 2√(2+x) du. Substituting and then simplifying, I managed to get ∫2(x^2)u^2 du. But i can't go further from there. i can't find a way to get rid of the x

^{2}, I didn't get far using u= x

^{2}or u=x+2 so I'm pretty sure I'm using the right substitution. I need help.