Stage: 5 Challenge Level: 
You might find some roots by trial and error but can you be sure
you have found them all?
Manipulating algebraic expressions/formulae. Patterned numbers. Inequality/inequalities. Number theory. Graphs. Mathematical reasoning & proof. Stage 5 - Reviewed 2012. Powers & roots. Index notation/Indices. Dynamical systems.
Published November 2000.
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