SOLUTION: identify all double roots x^3+4x=4x^2

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Question 976097: identify all double roots
x^3+4x=4x^2
Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
x^3-4x^2+4x=0
x(x^2+4x+4)=0
x(x+2)(x+2)=0
x=0,-2,-2
The double roots are -2, and there is a "bounce" at x=-2
graph%28300%2C300%2C-10%2C10%2C-10%2C10%2Cx%5E3-4x%5E2%2B4x%29