SOLUTION: the sum of positive number and its square is 72.Find the number

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Question 774953: the sum of positive number and its square is 72.Find the number
Found 2 solutions by tommyt3rd, Alan3354:
Answer by tommyt3rd(5050) About Me  (Show Source):
You can put this solution on YOUR website!
x+x^2=72
x%5E2%2Bx-72=0
-8*9=-72 and -8+9=1
so...
x%5E2%2Bx-72=%0D%0A%28x-9%29%28x%2B8%29=0


checking...
-8+64 is not 72
but
9+63=72
so it is 9

Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
the sum of positive number and its square is 72.Find the number
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x%5E2+%2B+x+=+72
x = 8
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