SOLUTION: how do i find all double roots of s^3-27s=0 showing all the steps?

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Question 239926: how do i find all double roots of
s^3-27s=0 showing all the steps?
Answer by RAY100(1637) About Me  (Show Source):
You can put this solution on YOUR website!
s^3 -27s =0
.
s(s^2 -27) = 0
.
s=0
.
s^2 -27= 0
.
s^2 =27
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s = +/- sqrt 27
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s= +/- sqrt(9*3)
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s= +/- sqrt 9 * sqrt3
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s = +/- 3sqrt3
.
.
.
check,,s=0,,,,,0=0,,,ok
.
s=+3sqrt3...(3sqrt3)^3 -27(3sqrt3) =0,,,ok
.
s=-3sqrt3....(-3sqrt3)^3 -27(-3sqrt3) = 0,,,,,ok
.