Consider the expression [tex]x(2y+4z)^2.[/tex] This expression is equivalent to the expression
[tex]x\cdot (2y+4z)^2.[/tex]
This expression contains two factors:
1 factor: [tex]x;[/tex]
2 factor: [tex](2y+4z)^2.[/tex]
The second factor does not contain x (is not depending on x), then the expression [tex]x(2y+4z)^2[/tex] is the product of x and a factor not depending on x.
Answer: correct choice is D
