SOLUTION: if the square of a positive number is increased by 3 times the number the result is 54? what is the answer?

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Question 220084: if the square of a positive number is increased by 3 times the number the result is 54? what is the answer?
Found 2 solutions by rfer, MathTherapy:
Answer by rfer(16322) About Me  (Show Source):
You can put this solution on YOUR website!
3x^2-54
x^2=18
x=4.243

Answer by MathTherapy(10555) About Me  (Show Source):
You can put this solution on YOUR website!
if the square of a positive number is increased by 3 times the number the result is 54? what is the answer?

Let the number be N

Based on the given information, we get: N%5E2+%2B+3N+=+54

N%5E2+%2B+3N+-+54+=+0

(N + 9)(N - 6) = 0

N = - 9, or 6. but since we're looking for a positive number, then that number is: highlight_green%286%29