Skip Navigation

Lemmy Be Wholesome @lemmy.world

ickplant @lemmy.world

2y ago

Wholesome math teacher

11 comments

This is actually funny lmao
It's so strange that it was always taught me as a²+b²+2ab. Of course I know it doesn't matter, but still strange to see it this way.
- It makes more sense to me because, when binomials are taught, it's usually in the form of a variable and a constant.
  E.G. a = x, b = 3: (x + 3)^{2. When expanded, that's usually x}2 + 6x + 9, and not x^2 + 9 + 6x.
  
  Exactly, you are going to lower and lower powers. (Is power the word in English here?)
  ax², bx¹, cx⁰
- Pascal's triangle https://wikimedia.org/api/rest_v1/media/math/render/svg/3a8beb14cd64d7451f9f9e4f965713d3e7e62cbb
- A less maths-y approach: a is blue, b is red, ab is ~~pink~~ purple. How would you order them?
  
  No no, ab is purple.
- FOIL reading left to right.
- Me too

11 comments