SOLUTION: I have to use the discriminant to determine the number of solutions of the quadratic equation, and weather the solutions are real or complex. 2x^2+x-1=0

Algebra ->  Linear-equations -> SOLUTION: I have to use the discriminant to determine the number of solutions of the quadratic equation, and weather the solutions are real or complex. 2x^2+x-1=0      Log On


   

Question 481207: I have to use the discriminant to determine the number of solutions of the quadratic equation, and weather the solutions are real or complex.

2x^2+x-1=0
Answer by rfer(16322) About Me  (Show Source):
You can put this solution on YOUR website!
a=2, b=1, c=-1
b^2-4*ac
1^2-4*2*-1
1+8=+9
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I will let you take it from here.
Tip: solutions are real