median
don steward
mathematics teaching 10 ~ 16

Friday, 11 November 2016

solving quadratics by transformation

an alternative method to completing the square for solving a quadratic equation

maybe a simpler method to understand, for some

based on the difference of two squares

general principle: given a problem, try to transform it to a simpler one

this method was introduced to me by David Wells

the powerpoint is here












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