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In a quadratic equation, one with order two, in the form of ax2 + bx + c = 0, the solution for x is (-b +/- squareroot (b2 - 4ac)) / 2a. Note: The term b2 - 4ac is known as the discriminant. If it is positive, then there are two real solutions. If it is zero, then there is one real solution. If it is negative, then there are two imaginary solutions, also known as complex conjugates. To visualize this, consider that the original equation is a parabola. If its zero-slope point (apex) touches the x-axis, there is one real root. If it crosses the x-axis, there are two real roots. If it does not cross the x-axis, there are two complex roots.

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Q: How do you Solve for x with a quadratic formula?
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