Asked by Anonymous

n-2n^2=0
Answered by Reiny
n(1 - 2n) = 0
n = 0 or 1 - 2n = 0

n = 0 or n = 1/2
Answered by Anonymous
How did you get 1 - 2n = 0?
Answered by Reiny
I took out a common factor of n

expand n(1-2n)
What do you get ?
Answered by Anonymous
Yes, but how did the first n in n(1 - 2n) go away?
Answered by Reiny
It didn't, n = 0 became a solution.

Are you not familiar that if you have a factored form = 0, such as
(A)(B) = 0 , then
A = 0 or B = 0 ???
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