Rational zeros are all the possible factors of d over all of the possible factors of a, for
p(x) = ax^3 + bx^2 + cx + d
All of the factors of -35 are:
+/- 1, +/- 5, +/- 7, +/- 35
All of the factors of a (which is 1) are:
+/- 1
All possible rational zeros:
+/- (1, 5, 7, 35) / +/- (1)
OR
1, -1, 5, -5, 7, -7, 35, -35
Of course, if neither of these possible rational roots work, it follows that there are irrational and/or complex roots.
2007-03-30 15:09:45
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answer #2
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answered by Puggy 7
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