SOLUTION: one x-intercept for a parabola is at the point (0.6,0)use the quadratic formula to find the other x-intercept for the parabola defined by the equation: y=-5x^2+8x-3.

Question 389241: one x-intercept for a parabola is at the point (0.6,0)use the quadratic formula to find the other x-intercept for the parabola defined by the equation: y=-5x^2+8x-3.
Found 2 solutions by richard1234, ewatrrr:
Answer by richard1234(7193) (Show Source): You can put this solution on YOUR website!
If we use the quadratic formula,

= 0.6 or 1, so 1 is the other x-intercept.

There's a simpler solution that doesn't involve the quadratic formula. If you know that the sum of the roots of the polynomial is -b/a = -8/-5 = 1.6, we have 1.6 = 0.6 + x, x = 1.
Answer by ewatrrr(24785) (Show Source): You can put this solution on YOUR website!

Hi
y= -5x^2+8x-3
at x-intercept , y = 0
-5x^2 + 8x - 3 = 0
uaing the Quadratic Formula to solve

x = 6/10 = .6 (already determined by the question)
x = 10/10 = 1

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