Finding roots in an equation

  • Thread starter ryan.1015
  • Start date
  • #1
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Homework Statement



show that the equation x^4+x^3-4x^2-1=0

Homework Equations





The Attempt at a Solution


I wasn't sure where to start. The minus one at the end really threw me off. I tried to factor by grouping by coul;dn't figure out what to do with the -1
 

Answers and Replies

  • #2
135
0
Have you learned the rational root test?
 
  • #4
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5,762

Homework Statement



show that the equation x^4+x^3-4x^2-1=0

Homework Equations





The Attempt at a Solution


I wasn't sure where to start. The minus one at the end really threw me off. I tried to factor by grouping by coul;dn't figure out what to do with the -1
What's the rest of the sentence?
show that the equation x^4+x^3-4x^2-1=0
Show that this equation does what?

Please give us the exact wording of the problem.
 

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