SOLUTION: I just don't get it, none of them give me the correct answer: 1. 125x3 + 64 A (5x - 4)(25x2 + 20x - 16) B(5x + 16)(25x2 - 20x + 2) C(5x + 8)(25x2 - 40x + 16) D(5x +

Algebra ->  Test -> SOLUTION: I just don't get it, none of them give me the correct answer: 1. 125x3 + 64 A (5x - 4)(25x2 + 20x - 16) B(5x + 16)(25x2 - 20x + 2) C(5x + 8)(25x2 - 40x + 16) D(5x +       Log On


   

Question 766738: I just don't get it, none of them give me the correct answer:


1. 125x3 + 64
A (5x - 4)(25x2 + 20x - 16)
B(5x + 16)(25x2 - 20x + 2)
C(5x + 8)(25x2 - 40x + 16)
D(5x + 4)(25x2 - 20x + 16)
E (5x + 2)(25x2 - 40x + 16)
F cannot be factored

Answer by lwsshak3(11628) About Me  (Show Source):
You can put this solution on YOUR website!
125x3 + 64
(5x)^3+4^3
use sum of cubes formula:
(5x+4)(25x^2-20x+16)
D is the correct answer