Question 174303
Since the polynomial has a degree of 3 (x^3), it has three solutions. If you have to 'do it by hand', you can always find the 'possible' real answers by looking at the factors of the coefficients that make up the high order term and the lowest order term. Since the high order temr is one, the possible real answers will be +_
1,2,3,4,6,8,12,24 . Then you just use trial and error to find that -3 works

Use this URL first --> http://www.hostsrv.com/webmab/app1/MSP/quickmath/02/pageGenerate?site=quickmath&s1=algebra&s2=factor&s3=basic

From that answer {{{(x+3)(x^2-2x+8)}}} you see there is one real answer {{{-3}}}
Then use the quadratic equation to find the other two
*[invoke quadratic "x", 1, -2, 8]