Evaluating Expressions with Two Variables

[BSJ-sl]

This is awesome! I really struggled with this but Kahn academy really helped me!!! Thanks Sal!!

[kendo]

Yep, whenever you see two variables next to each other, like AB, that means A multiplied by B. If it's 2Y, that means 2 multiplied by Y.

[TheTokyoExpress]

if you must; enclose "chi" within parenthesis and have consistent spacing, then no confusion will ensue

[TheLegatoM]

Pleasant listening as always! One question though, Have you already or do you plan to make videos discussing non-euclidean geometry?

[Skeluz]

Yeah. Same goes for the first part of the second example. "(-1)(2) = -2"
It's called "implied multiplication".

[KHAkola-quql]

big like to this useful educational channel .

[aidanroggow]

You should check out the website, it's got a lot of stuff that can help you with things like variables.

[biologyphp]

I have a question in the first example:
a = 5 and b = 7

When you put a b - 3 = ?
Why a b are multiplying if there is no symbol " · "? Is always like that?

Thanks.

[pastel_moonlight]

I have a So in the first video a=6 but can it = anything?

[excelon]

I don't get people's fascination with being first in comments? Does being first somehow entitle you to something privileged? Or do you feel that you have greater self worth and that you are the king of comments on this video?

[justincracked]

man said 16 +1+1 but didn’t add the ones 😂

[forrestdump]

more high level math please, my good buddy sal?

[Cryztaliser]

i thought this would be about integration with two variables...close enough