SOLUTION: If you subtract a number from twice its square, the result is 3. Find all such numbers

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Question 370935: If you subtract a number from twice its square, the result is 3. Find all such numbers
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
2x^2 - x = 3
A quadratic equation
2x^2 - x - 3 = 0
factors to:
(2x - 3)(x + 1) = 0
Two solutions
2x = 3
x = 1.5
and
x = -1
:
Both these solution check out in the original problem