SOLUTION: Find the x-intercept(s) and the coordinates of the vertex for the parabola y = x^2-2x-8. If there is more than one x-intercept, separate them with commas.

Question 611909: Find the x-intercept(s) and the coordinates of the vertex for the parabola y = x^2-2x-8. If there is more than one x-intercept, separate them with commas.

Answer by lwsshak3(11628) (Show Source): You can put this solution on YOUR website!
Find the x-intercept(s) and the coordinates of the vertex for the parabola y = x^2-2x-8. If there is more than one x-intercept, separate them with commas.
**
y = x^2-2x-8
complete the square
y = (x^2-2x+1)-8-1
y = (x-1)^2-9
vertex: (1,-9)
x-intercepts
set y=0
(x-1)^2-9=0
(x-1)^2=9
(x-1)=�√=�√9=�3
x=-2,4

RELATED QUESTIONS
Find the x-intercept(s) and the coordinates of the vertex for the parabola y=x^2+2x-24.... (answered by josgarithmetic)

Find the x-intercept(s) and the coordinates of the vertex for the parabola y=x^2+2x-24 (answered by spacesurfer)

Find the x-intercept(s) and the coordinates of the vertex for the parabola y = -x^2 -... (answered by Edwin McCravy)

Find the -xintercept(s) and the coordinates of the vertex for the parabola x^2 - 2x -... (answered by MathLover1)

[ Find the x-intercept(s) and the coordinates of the vertex for the parabola y = x^2 + 2x (answered by TimothyLamb)

Find the x-intercept(s) and the coordinates of the vertex for the parabola... (answered by josgarithmetic)

Find the x-intercept(s) and the coordinates of the vertex for the parabola y=X^2+6x-7 (answered by josgarithmetic)

For the quadratic function f(x)= -x^2+2x+3, give the coordinates(ordered pair)of the... (answered by solver91311)

Help please I have been working on these 3 problems for days and I still can not get it.I (answered by stanbon)