SOLUTION: Calculate the value of the discriminant of x^2+4x+4=0 ,By examining the sign of the discriminant in part a, how many x-intercepts would the graph of y=x^2+4x=4 have? Why?

Algebra ->  Graphs -> SOLUTION: Calculate the value of the discriminant of x^2+4x+4=0 ,By examining the sign of the discriminant in part a, how many x-intercepts would the graph of y=x^2+4x=4 have? Why?      Log On


   

Question 157235: Calculate the value of the discriminant of x^2+4x+4=0 ,By examining the sign of the discriminant in part a, how many x-intercepts would the graph of y=x^2+4x=4 have? Why?
Answer by nabla(475) About Me  (Show Source):
You can put this solution on YOUR website!
Discriminant is: sqrt%28+b%5E2-4%2Aa%2Ac+%29+
for ax^2+bx+c=0

So,
sqrt%28+16-16+%29+ =0
This means there will be one zero (x intercept). This is because the +/- has to relevance with a zero root.