Question

What value of k makes the factor (x+3) a factor of the function f(x)= 3x^3–2x+k? Someone plz help!!!! It’s for pre cal! It’s using the synthetic division

Answer 1

Answer:

75

Step-by-step explanation:

Since x+3 is the factor of the function f(x) .

So, -3 should satisfy f(x),

Thus putting -3 in f(x) we get

                       3×$(-3)^{3}$-2×(-3)+k = 0

                       -81+6+k = 0

                         k = 75.

So , k should be equal to 75.