Question

Find the value of k, if x+3 is a factor of 3x3 +kx +6.

Answer 1

Step-by-step explanation:

Using Factor Theorem...

x+3=0

x=-3

Evolving the 'x'

3(-3)^3 + k(-3) +6=0

-81 + (-3k)+6=0

-75-3k=0

-3k = 75

k= -25

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Answer 2

If x+3 is a factor of the given polynomial then -3 is a zero of the polynomial if we divide -3 by the eqn we will get 5 as the value of k.

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