ickplant@lemmy.world to Lemmy Be Wholesome@lemmy.world · 11 months agoWholesome math teacherlemmy.worldimagemessage-square8fedilinkarrow-up1261arrow-down15
arrow-up1256arrow-down1imageWholesome math teacherlemmy.worldickplant@lemmy.world to Lemmy Be Wholesome@lemmy.world · 11 months agomessage-square8fedilink
minus-squareTheGreenGolem@lemm.eelinkfedilinkarrow-up16arrow-down1·11 months agoIt’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.
minus-squareoce 🐆@jlai.lulinkfedilinkarrow-up9·edit-211 months agoPascal’s triangle https://wikimedia.org/api/rest_v1/media/math/render/svg/3a8beb14cd64d7451f9f9e4f965713d3e7e62cbb
minus-squareDicska@lemmy.worldlinkfedilinkarrow-up5·edit-211 months agoA less maths-y approach: a is blue, b is red, ab is pink purple. How would you order them?
minus-squarefunnystuff97@lemmy.worldlinkfedilinkarrow-up1·11 months agoIt 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.
minus-squareTheGreenGolem@lemm.eelinkfedilinkarrow-up1·11 months agoExactly, you are going to lower and lower powers. (Is power the word in English here?) ax², bx¹, cx⁰
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.
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
pinkpurple. How would you order them?Me too
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
FOIL reading left to right.