SOLUTION: I am trying to factor this problem. 18x^3-2x I know I must use a formula. a^3-b^3=(a-b)(a^2+ab+b^2) This is what I did. 18^3-2x (18-2)(18^2+9+2^2) (9-2)(9^2+9+1*2) 2(3+

SOLUTION: I am trying to factor this problem. 18x^3-2x I know I must use a formula. a^3-b^3=(a-b)(a^2+ab+b^2) This is what I did. 18^3-2x (18-2)(18^2+9+2^2) (9-2)(9^2+9+1*2) 2(3+

Algebra.Com

Question 579391: I am trying to factor this problem. 18x^3-2x
I know I must use a formula. a^3-b^3=(a-b)(a^2+ab+b^2)
This is what I did.
18^3-2x
(18-2)(18^2+9+2^2)
(9-2)(9^2+9+1*2)
2(3+3+1)
This is not the answer and I don't know what I am doing wrong. Can you help me please?
Answer by scott8148(6628) (Show Source): You can put this solution on YOUR website!
common factors first ___ 2x (9x^2 - 1)

difference of squares ___ 2x(3x + 1)(3x - 1)
RELATED QUESTIONS
I am trying to factor... The exact problem says : The following formula is true :... (answered by mananth)

Factor the Polynomial Completely. 64x^3 + y^3 I know this uses the "Sum of Cubes"... (answered by richwmiller)

Would you help me figure out this problem? I seem to mess up on signs. This is not... (answered by richard1234)

1. A v B 2. A ≡ (C & D) 3. B ⊃ (D & G)/D I am trying to solve this equation. i... (answered by math_helper)

I am having trouble understanding how my instructor got this answer from factoring this... (answered by KMST)

Hi This question has to do with negative exponents. I am trying to rewrite this... (answered by DrBeeee,sachi,MathTherapy)

Multiply and Divide Polynomials - including FOIL I want to make sure that my answers... (answered by ankor@dixie-net.com,jim_thompson5910)

I am having trouble understanding how to use the Perfect Square Trinomial Formula. my... (answered by longjonsilver)

Tutor how do I factor this problem? 18{{{a^3}}}� 24{{{a^2}}}b + 15a{{{b^2}}}�... (answered by scianci)