SOLUTION: using the discriminant, how many times does the graph of this equation cross the x-axis? 2x^2+6x-3=0 im not looking for the answer just explain the steps please?

Algebra ->  Quadratic Equations and Parabolas -> SOLUTION: using the discriminant, how many times does the graph of this equation cross the x-axis? 2x^2+6x-3=0 im not looking for the answer just explain the steps please?      Log On


   

Question 373715: using the discriminant, how many times does the graph of this equation cross the x-axis?
2x^2+6x-3=0
im not looking for the answer just explain the steps please?
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
D=b%5E2-4ac
D=6%5E2-4%282%29%28-3%29
D=36%2B24
D=60
Since D%3E0 it has two real roots and the function crosses the x-axis twice.
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graph%28300%2C300%2C-10%2C10%2C-10%2C10%2C0%2C2x%5E2%2B6x-3%29