Hi,  Previously Posted

y = x^2 +2x - 8 

y = x^2 +2x +1 - 1 - 8 

y = (x+1)^2 - 9  V(-1,-9) and line of symmetry is x = -1

and when y  = 0 ⇒   (x+1)^2 = 9, x = -1 ± 3, Pt(2,0) & (-4,0) are the x-intercepts



 

RELATED QUESTIONS

Solve this by graphing: x^2 +2x - 8 = 0

I had tried to graph this for several hours,... (answered by ewatrrr)

hello i am trying to understand and figure out how to solve graphing.. example.   

3x... (answered by Earlsdon)

PLEASE HELP ME SOLVE THIS PROBLEM.  (x2+5) = x+3  The answer is -2/3 but I don't know how  (answered by AnlytcPhil,stanbon)

I cannot solve x^4-5x^2-8=0
My professor told me to substitute y for x but I still... (answered by checkley71,Nate)

x2-2x-13=0 i can not figure out how to figure this... (answered by stanbon,MathLover1)

Please can you help me with this equation, I have tried but can't figure it out. The... (answered by fners)

please help and show all work. Haven't been in school for over 30years. So this is really  (answered by josgarithmetic)

I have tried all tricks I could think of and I STILL cannot figure this one out.  Can you  (answered by stanbon)

Please help me solve this equation: Solve by graphing x-y=2 
                             (answered by edjones)