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OpenStudy (anonymous):
In the quadratic equation x ^ 2 - x + c = 0, c represents an unknown constant. If x = -4 is one of the solutions to this equation, what is the value of c?
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OpenStudy (tyteen4a03):
Since you know that x = - 4 is a solution, (-4)^2 - (-4) + c = 0. Solve the equation to find c.
OpenStudy (anonymous):
Thank you
OpenStudy (tyteen4a03):
@Mathsforfun You're welcome. :)
OpenStudy (anonymous):
Where can I find a graphing calculator online?
OpenStudy (tyteen4a03):
Try Wolfram|Alpha.
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