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Finding possible and actual rational roots

  • Thread starter duki
  • Start date
  • #1
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0

Homework Statement



a) 2x^4 - 15x^3 + 23x^2 + 15x - 25 = 0
b) 12x^3 - 20x^2 + 23x - 10 = 0

Homework Equations



The Attempt at a Solution



I was wondering if you guys could check my answers.

For A:

Possibles: +/- {1, 5, 25} / {1, 2}
Actual: 5, 5/2
 

Answers and Replies

  • #2
264
0
And for B:

Possibles: +/- {1, 5, 10} / {1, 2, 3, 4, 6}
Actual: None
 
  • #3
33,154
4,838
And for B:

Possibles: +/- {1, 5, 10} / {1, 2, 3, 4, 6}
Actual: None
Possibles: +/- {1, 2, 5, 10} / {1, 2, 3, 4, 6, 12}
 

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