Question

If $$(x - 2)$$ is a factor of $$x^3 - kx - 12$$, then the value of $$k$$ is ______.

पर्याय

• 3

• 2

• –2

• –3

Answer 1

If $$(x - 2)$$ is a factor of $$x^3 - kx - 12$$, then the value of $$k$$ is –2.

Explanation:

$$f(2) = 8 - 2k - 12 = 0$$, which gives $$k = -2$$.