Posted by **kate** on Friday, November 16, 2007 at 9:31pm.

solve by using the quadratic formula:

x2 plus x minus 2 equal 0

I know the formula is a=1 b=1 c=2

I'm having trouble solving...please help.

- i need help..algebra/math -
**Michael**, Friday, November 16, 2007 at 10:40pm
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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