Question

One of the factors of 6x3 – 864x is:

4

x2

x + 12

x – 8

Answer 1

its the 3rd choice

\[x^3 - 864x = 6x(x^2 - 144) = 6x(x + 12)(x -12)\]

Answer 2

we can factor out a 6x

so

6x(x² - 144)

now what are the factors of 144? 12 and 12 sounds like a good place to start

6x(x+12)(x-12)

so choice 3

Answer 3

Do you know what a factor is? @campbell_st I would avoid spoonfeeding her the answer.