Question

If for p(x) = x³ + kx² - 4x + 5, p(3) = 0, then find the value of k.

Answer 1

hey there

here is your answer

hope it helps you

as p ( 3 ) is a factor of the given polynomial

p ( 3 ) = ( 3 ) ^ 3 + ( 3 ) ^2 k - 4 ( 3 ) + 5 = 0

27 + 9k - 12 + 5 = 0

9k = -20

k = -20 / 9 = -2.22

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