Nabanita Asked a Question
July 21, 2020 5:30 pmpts 30 pts
Let f(x) =x*- 5x + 2. then fhas no real root f has exactly one real root Of has exactly three real roots all roots of f are real
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  • Arzoo Best Answer
    See the attachment
    • cropped6625750996352999317.jpg
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    Nabanita
    can we do this without drawing the graph?
  • Deepak singh
    since it is odd degree polynomial , it's must have atleast one real root..
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  • Pranav kumar
    see the attached.
    • cropped2251812414404279018.jpg
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  • Vishal goswami
    use Descartes' rule .
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