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61.7 The case of the spurious root

Published online by Cambridge University Press:  22 September 2016

Rob Webb*
Affiliation:
Warwick School, Warwick CV34 6PP

Extract

The following ‘paradox’ was produced by one of my fourth year (14-year-old) pupils in an attempt to solve a quadratic equation. (The fourth years have no knowledge of techniques for solving quadratics, nor of course of complex numbers.)

Type
Notes
Copyright
Copyright © Mathematical Association 1977

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