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If k is a root of the polynomial p3 âˆ’ k2p + p + 5 equal to zero then the value of k is

Answers (1)

R Ravindra Pindel

The given polynomial is f(p) = p³ - k²p + p + 5
Given that k is a root of the polynomial, so f(k) = 0
⇒ k³ - k²×k + k + 5 = 0
⇒ k³ - k³ + k + 5 = 0
⇒ k + 5 = 0
⇒ k = -5
The value of k is -5.

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