Question

PLEASE HELP ITS AN EMERGENCYYYYYYYYYY!!!

Given f(x) = 3x^3 - 4x + k, and x – 1 is a factor of f(x), then
what is the value of k?

Answer 1

Answer:

The value of k is 1.

Step-by-step explanation:

x – 1 is a factor of f(x)

This means that:

x - 1 = 0

x = 1

That means that when $x = 1, y = 0$. We use this to find the value of k.

f(x) = 3x^3 - 4x + k

$3*1^3 - 4(1) + k = 0$

$3 - 4 + k = 0$

$k = 1$

The value of k is 1.