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OpenStudy (anonymous):
Find All real Zeros of the function f(x) = x^3 -31x -30 I know the answers are -5, -1, and 6 (to book told me) but I think I may be doing something wrong when solving because I cant seem to get the answers! All of the possible x values could be + or - (1,2,3,5,6,15,30) To solve I have to use synthetic division. Please help!
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OpenStudy (anonymous):
@SnuggieLad
OpenStudy (anonymous):
f(x) can be factored:\[x^3-31 x-30=(x-6) (x+1) (x+5) \]
OpenStudy (anonymous):
A plot is attached.
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