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kelsey1

  • 3 years ago

How do you find all the zeros of the function: f(x)=x^4-x^3+2x^2-4x-8

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  1. kelsey1
    • 3 years ago
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    @timo86m

  2. timo86m
    • 3 years ago
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    Factor or graph.

  3. kelsey1
    • 3 years ago
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    can you show me how to factor this problem

  4. timo86m
    • 3 years ago
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    factored (x-2)*(x+1)*(x^2+4) ^ notice here you have to take negative sqrt of a the number so it is 2 imaginaries. {x = 2}, {x = -1}, {x = 2*I}, {x = -2*I}

  5. kelsey1
    • 3 years ago
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    isn't x^2+4 prime?

  6. kelsey1
    • 3 years ago
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    Oh okay http://answers.yahoo.com/question/index?qid=20091115111403AAnQ7Zk I see what you did there :) Gracias!!!!

  7. timo86m
    • 3 years ago
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    De nada :D

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