Factor.

18x3 – 24x

A.

6x(3x2 – 4)

B.

3x(6x2 – 9)

C.

x(18x2 – 24)

D.

18x3 – 24x

is it b?

Question

Factor.



        18x3 – 24x
	
	
 
A.
	

6x(3x2 – 4)
	
 
B.
	

3x(6x2 – 9)
	
 
C.
	

x(18x2 – 24)
	
 
D.
	

18x3 – 24x
 

is it b?

ipwnbunnies · Answer

Almost. Can't you factor the numbers a bit more? You got the x factoring right.

paki · Answer

take common the 6x.. it will be like... 6x(3x2 – 4)... so option A works here...

yanasidlinskiy · Answer

To factor 18x^3-24x, all you have to do is find its common factor, also known as the Greatest Common Factor.
Both numbers have  2, 3, and x in common, which you can factor out so it would be 6x(3x^2-4). If you were to solve out 6x(3x^2-4) to get 18x^3-24x again, you'd multiply 6x with the two terms inside the parenthesis.