SOLUTION: Simplify this quadratic answer 9+-√693 /3 ( Just restating it incase it was hard to read ) 9 plus or minus the square root of 693 divided by 3

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Question 693928: Simplify this quadratic answer
9+-√693 /3
( Just restating it incase it was hard to read ) 9 plus or minus the square root of 693 divided by 3
Answer by KMST(5328) About Me  (Show Source):
You can put this solution on YOUR website!
I believe that you meant %289+%2B-+sqrt%28693%29%29%2F3 which you could write as (9 +- sqrt(693))/3.
Since the digits of 693 add to 18, which is a multiple of 9,
we know that 693 is a multiple of 9,
so we divide to find 693%2F9=77 <--> 693=9%2A77.
We also know that sqrt%289%29=3.
We also know that 9=3%2A3.
So,


(If you meant 9 +- sqrt(693)/3 = 9+%2B-+sqrt%28693%29/3 = 9+%2B-+sqrt%28693%29%2F3, which is a different number, I am sorry to have misinterpreted).