SOLUTION: Can You help me with this question please? By examining the sign of the discriminant d=0, how many x-intercepts would the graph of {{{x^2+2x+1=0}}}have? Why?

Algebra ->  Matrices-and-determiminant -> SOLUTION: Can You help me with this question please? By examining the sign of the discriminant d=0, how many x-intercepts would the graph of {{{x^2+2x+1=0}}}have? Why?      Log On


   

Question 188948: Can You help me with this question please?
By examining the sign of the discriminant d=0, how many x-intercepts would the graph of x%5E2%2B2x%2B1=0have? Why?
Answer by Mathtut(3670) About Me  (Show Source):
You can put this solution on YOUR website!
b%5E2-4ac D=0.......therefore 1 solution. because the graph only touches the x axis in 1 point. if D>0 two real solutions
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if D<0 then two imaginary solutions