Let . If is a zero of , which of the following lists all the zeros of…

MATHEMATICS · Single correct · A Level · Mathematics · Algebra and Functions · Algebra and Functions

Problem

Let

p(x)=2x^3+kx^2-18x+9

. If

x=3

is a zero of

p(x)

, which of the following lists all the zeros of

p(x)

? (a)

3,\,-3,\,2

(b)

3,\,-3,\,\dfrac{1}{2}

(c)

3,\,1,\,-\dfrac{1}{2}

(d)

3,\,-\dfrac{3}{2},\,-3