- #1

- 555

- 19

## Homework Statement

23 - 5x - 4x

^{2}= 0

find ([itex]\alpha[/itex] - [itex]\beta[/itex])

^{2}

## Homework Equations

In previous parts of the question i've calculated [itex]\alpha[/itex] + [itex]\beta[/itex], [itex]\alpha[/itex][itex]\beta[/itex], 1/[itex]\alpha[/itex] + 1/[itex]\beta[/itex] and ([itex]\alpha[/itex]+1)([itex]\beta[/itex]+1) but I can't think of any rules I know to help me solve the problem.

## The Attempt at a Solution

Expanding ([itex]\alpha[/itex] - [itex]\beta[/itex])

^{2}

gives

[itex]\alpha[/itex]

^{2}+[itex]\beta[/itex]

^{2}-2[itex]\alpha[/itex][itex]\beta[/itex]

But I don't know what I can do with this info.

I'd appreciate a nudge in the right direction!

Thanks