A neat trick to quickly calculate fifth roots. More links & stuff in full description below ↓↓↓ Featuring Simon Pampena, Australian Numeracy Ambassador. https://twitter.com/mathemaniac...
========== SIMON PAMPENA: So, 2 × 2 × 2 × 2 × 2 ...OK, two multiplied by itself five times is 32.So the opposite of that, is a question: What number multiplied by itself five times gives you 32?And the way you express that, is that you go, is 32 to the fifth.That's the fifth root.And that happens to be 2.So, because in mathematics, there's some beautiful patterns, there's actually a waythat you can work out the fifth root of very large numbers in your head very quickly.And you don't have to use a lot of computing power, brain power.So, Brady, if you take any double digit number you like, and multiply by itself5 timesand you tell me that number, in English, from left to right,and I write it down, I will be able to tell you what your original nu...
