Which equation shows a valid, practical step in solving 4th root of 2 x minus 8 plus 4th root of 2 x plus 8 is equal to 0 ?
A
open paren 4th root of 2 x minus 8 close paren cubed is equal to negative open paren 4th root of 2 x plus 8 close paren cubedB
open paren 4th root of 2 x minus 8 close paren to the 4th power is equal to negative open paren 4th root of 2 x plus 8 close paren to the 4th powerC
open paren 4th root of 2 x minus 8 close paren cubed is equal to open paren negative 4th root of 2 x plus 8 close paren cubedD
open paren 4th root of 2 x minus 8 close paren to the 4th power is equal to open paren negative 4th root of 2 x plus 8 close paren to the 4th power