........................
128х³+32х²+2х=0
2х(64х²+8х+1)=0
2х(8х+1)²=0
2х=0 или (8х+1)²=0
х=0 8х+1=0
8х= -1
х= -1/8
........................
128х³+32х²+2х=0
2х(64х²+8х+1)=0
2х(8х+1)²=0
2х=0 или (8х+1)²=0
х=0 8х+1=0
8х= -1
х= -1/8