Posted by kate on Friday, November 16, 2007 at 9:31pm.
x^2 + x - 2 = 0
a = 1, b = 1, c = -2 are the variables.
The formula is "the opposite of b plus or minus the square root of b squared minus 4ac all over 2a."
If you click "Mathematics" on the right, a tutorial on the quadratic formula is available. Go to "Algebra" and then "Quadratic Formula."
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