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Apr
25
awarded  Yearling
Mar
10
answered Why can ALL quadratic equations be solved by the quadratic formula?
Nov
6
awarded  Popular Question
Oct
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awarded  Popular Question
Sep
13
awarded  Good Question
Sep
7
awarded  Necromancer
Aug
2
awarded  Nice Question
Jun
30
answered Why can't a non-zero polynomial satisfy some equations?
Jun
22
comment Distributive property on fractions
It's certainly not a rigorous proof. But it's supposed to give some intuition as to why the denominator behaves differently.
Jun
22
comment Distributive property on fractions
@AlexG. As far as I know, 0 and 1 are the only cases where this holds.
Jun
22
revised Distributive property on fractions
Brackets
Jun
22
answered Distributive property on fractions
May
20
answered Non-traditional math concepts for early education
May
13
comment What exactly IS a square root?
@paqogomez Fixed.
May
13
revised What exactly IS a square root?
edited body
May
12
awarded  Nice Answer
May
12
comment What exactly IS a square root?
@lhf Depends on context. Most people seem to mean the positive solution, but sometimes people seem to mean any solution. (E.g., when dealing with complex numbers.)
May
12
answered What exactly IS a square root?
Apr
28
awarded  Notable Question
Apr
28
comment Definition of prime element in a Euclidean ring does not make sense. Herstein - Topics in Algebra
This. Most people probably think of the statement "5 is prime" has being a universal fact, not something that's only true in certain contexts. I vaguely remember something about limits that exist in one field but don't exist in a slightly larger field.