SOLUTION: six less than twice what negative number squared is 66

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Question 608620: six less than twice what negative number squared is 66
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi

Let n represent that number

 2n^2 -6 = 66

   2n^2 = 72

    n^2 = 36

    n = ± sqrt%2836%29 = ± 6, the negative number would be -6