Question

find the value of k,if x
+3 is a factor of 3x²-x+k​

Answer 1

Answer:

k = 11

Step-by-step explanation:

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

*MUST SATISFY*

Substituting the value x = -3

we get,

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

3k = 33

k = 11

Answer 2

Step-by-step explanation:

let p(x)= 3x^2-x+k

x+3=0

therefore x = -3

p(-3) = 3(-3)^2-(-3)+k

=3*9+3+k

=30+k

now, k = -30