Question

find the value of k if (x plus 3) is a factor of 3x cube plus kx plus 6​

Answer 1

Answer:

If x+3 is a factor of the given equation then x = -3 must satisfy the equation.

Substituting the value x = -3 we get,

3(-3)^2 -3k + 6 = 0

3k = 33

k = 11

Step-by-step explanation:

Answer 2

Here,we will take-

x+3=0

x=0-3

x=-3

NOW

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

-729-3k+6=0

-723=0+3k

-723/3=k

-241=k ans.

HOPE IT WILL HELP YOU