SOLUTION: the square of a positive number exceeds itself by 56. what is the number?

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Question 921421: the square of a positive number exceeds itself by 56. what is the number?
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
v%5E2-v=56, v is the number.

v%5E2-v-56=0
%28v-8%29%28v%2B7%29=0

Pick the positive solution.