- #1
BOAS
- 552
- 19
Homework Statement
23 - 5x - 4x2 = 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