SOLUTION: the square of a certain number minus nine times the number is 36. find the number.

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Question 31334: the square of a certain number minus nine times the number is 36. find the number.
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
Let the number be "x".
Then x^2-9x=36
x^2-9x-36=0
(x-12)(x+3)=0
x=12 or x=-3
Cheers,
Stan H.