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Mathematics 9 Online
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?

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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