0,8х²=0,64х................

Question

0,8х²=0,64х................

Answer 1

0.8х²=0.64х
0.8х²-0.64х=0
0.8х(х-0.8)=0
х1=0
х2=0.8

Answer 2

0,8х(х-0,8)=0
х=0
х=0,8