SOLUTION: The Square of a positive number is 12 more than 4 times the number. Find the number.
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Question 391413: The Square of a positive number is 12 more than 4 times the number. Find the number.
Answer by ankor@dixie-net.com(22740) (Show Source): You can put this solution on YOUR website!
The Square of a positive number is 12 more than 4 times the number. Find the number.
:
x^2 = 4x + 12
x^2 - 4x - 12 = 0, our old friend the quadratic equation
Factors to
(x-6)(x+2) = 0
Positive solution
x = 6
:
:
check: 6^2 = 4(6) + 12
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