Given the polynomial f (x) = 8x5-4x3 6x 15

what one of the following is a possible rational root?

a. 5 / 6

b. 4 / 14

c. 7 / 5

d. 5 / 4

Question

31 May, 12:56

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Answers (1)

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Warner · Answer 1

Hello,

Answer D 5/4

since div 15={1,3,5,15}

and div 8={1,2,4,8}

posiible rational root is a*b where a∈div 15 and b∈div 8

Given the polynomial f (x) = 8x5-4x3 6x 15what one of the following is a possible rational root?a. 5 / 6b. 4 / 14c. 7 / 5d. 5 / 4