Question 61786
    Find the set of all complex solutions.
    x3-27=0
x^3-27=(x-3)(x^2+3x+9)=0
x=3 is one root.
x^2+3x+9=0
 {{{x = (-b +- sqrt( b^2-4*a*c ))/(2*a) }}}
 {{{x = (-3 +- sqrt( 3^2-4*1*9 ))/(2*1) }}}
 {{{x = (-3 +- sqrt( -27 ))/(2) }}}
 {{{x = (-3 +- 3*sqrt(3))/(2) }}}





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