SOLUTION: set s = {x/x^2+4x+4=0}

Algebra ->  Probability-and-statistics -> SOLUTION: set s = {x/x^2+4x+4=0}      Log On


   

Question 1117742: set s = {x/x^2+4x+4=0}
Found 2 solutions by josgarithmetic, t0hierry:
Answer by josgarithmetic(39630) About Me  (Show Source):
Answer by t0hierry(194) About Me  (Show Source):
You can put this solution on YOUR website!
s is the values of x such that x%5E2+%2B4x+%2B+4=0+
write Delta+=+4%5E2+-+4%2A4+=+0.
The discriminant is equal to zero. We have a double root.
x = -2
Indeed x%5E2+%2B4x+%2B+4+=+%28x-2%29%5E2