A ‘new’ way to solve quadratic equations (student stuff)

17 Jun, 2020 at 09:01 | Posted in Varia | 2 Comments

 

2 Comments

  1. This is not new. Let S equal the sum of the roots. Let P equal the product of the roots. Use these variables and follow his procedure for solving the two simultaneous equations. What you find is just the quadratic formula.

  2. This post, and several other recent mathematical posts here, are NOT suitable as student stuff.
    Such mathematical techniques, tricks and curiosa are just academic bling.
    There are far more worthwhile things for students to study and learn.

    In these days of powerful personal computers and programs, no normal person, economist, social scientist, engineer, applied scientist or philosopher uses these tricks.
    For example, quadratic equations can be quickly solved using scientific calculators or Excel.
    https://www.howtoexcel.org/formulas/how-to-solve-a-quadratic-equation/
    https://excelribbon.tips.net/T013686_Solving_a_Quadratic_Equation.html

    Note: From the Oxford Concise English Dictionary:
    bling (also bling-bling), noun & adjective, informal
    used to refer to ostentatiously expensive clothing or jewellery, or the style or attitudes associated with them: all the trappings of the bling lifestyle—sports cars, champagne, designer clothes.


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