contestada

Which ONE of the following represents the complete factorization of:[tex]2(3x+1)^{7} - 16x(3x+1)^6[/tex]

a) [tex]2(3x+1)^{6}(1+11x)[/tex]
b) [tex]2(3x+1)^{6}(1-5x)[/tex]
c) [tex]2(3x+1)^{6}(1-4x)[/tex]
d) [tex]2(3x+1)^{6}(1-11x)[/tex]
e)[tex]2(3x+1)(1-4x)[/tex]

The answer is b but I don't know the method of how to figure this out.