Quadratic formula mnemonic

17 Sep

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Going through some of my notes I rediscovered this mnemonic for the quadratic formula:

From square of b, take 4ac;
Square root extract, and b subtract;
Divide by 2a; you’ve x, hooray!

I am not sure of the origins of this mnemonic. The earliest version I could find was from J. S. Mackay in 1894, but he says the mnemonic was given to him by a member of the Edinburgh Mathematical Society.

Here’s another mnemonic for the quadratic formula:

 

 

 

And let’s not forget the Quadratic Formula Rap:

 

2 Responses to “Quadratic formula mnemonic”

Trackbacks/Pingbacks

  1. How to memorize a formula | peakmemory - September 18, 2014

    […] Yesterday, I blogged about a mnemonic for learning the quadratic equation. Here is an excellent video that teaches a general mnemonic technique for formula memorization: […]

  2. The importance of committing facts to memory | peakmemory - May 19, 2017

    […] By the way the quadratic equation is not that hard to learn. […]

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