- #1
hqjb
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Homework Statement
In one of the workings of a question I couldn't solve(from solution sheet) there was one step I couldn't understand.
Homework Equations
[itex]\frac{1}{x^2+x+1} = \frac{1-x}{1-x^3}[/itex]
The Attempt at a Solution
Tried partial fractions(unfactorable denominator) and could'nt get it, finally got it through trial and error but is there a method where you apply to all such expressions to simplify it?