i need help..algebra/math
posted by kate .
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.
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."