SOLUTION: Use the discriminant to find how many places the quadratic function crosses the x-axis. 4x^2 + 8x = 0 a) Two zeros b) One zero c) No zeros

Algebra ->  Quadratic Equations and Parabolas  -> Quadratic Equation Customizable Word Problems -> SOLUTION: Use the discriminant to find how many places the quadratic function crosses the x-axis. 4x^2 + 8x = 0 a) Two zeros b) One zero c) No zeros       Log On


   

Question 189968: Use the discriminant to find how many places the quadratic function crosses the x-axis.
4x^2 + 8x = 0


a) Two zeros
b) One zero
c) No zeros
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
Use the discriminant to find how many places the quadratic function crosses the x-axis.
4x^2 + 8x = 0
D = sqrt(8^2 - 4*4*0) = sqrt(8^2) = 8
Since D > 0 the function will have two zeros
=============
Cheers,
Stan H.

a) Two zeros
b) One zero
c) No zeros
0 solutions