Question

Algebra question...might be stupid.

Answer 1

whats the question?

Answer 2

When doing quadratics, how come you can do this.

Example: a^2=a+b

How is it a^2-a-b=0 instead of

a^2-a/(b) = 0. Oh wait that's if I, solving for b. I think I answered my own question but what rule lets us make it =0.

Answer 3

lets use an analogy

Answer 4

A = 3 apples
B = 2 bananas
C = 2 carrots

I have 3 apples, 2 bananas and 2 carrots (a+b+c). You have 2 bananas (b).
If we give away bananas, Its subtraction.
a+b+c=b
-b -b
a+c = 0

Answer 5

I see what you're getting at. Don't worry, thanks :).

Answer 6

I get it, it just hit me lol.

Answer 7

Or with math:

a^2 - a = b

if you divide both sides by n, then you get \[\frac{ (a ^{2}-a) }{ b } =\frac{ b }{ b }\]

Answer 8

and b/b is 1, not 0