a=5
3a² = 3*5² =3*25=75
(3a)² =(3*5)² =15² =225
3a³=3*5³=3*125=375
a=-5
3a² = 75
(3a)² =225
3a³=-375
a=0.2
3a² = 0.12
(3a)² =0.36
3a³=0.024
a=-0.2
3a³=-0.024
a=1/3
3a² = 3*1/9 = 1/3
(3a)² =(3*1/3)²=1
3a³=3*1/27=1/9
a=-1/3
3a² = 1/3
(3a)² =1
3a³=-1/9
a=0
3a² = 0
(3a)² =0
3a³=0
a=1/6
3a² =1/12
(3a)² =1/4
3a³=1/72
a=5
3a² = 3*5² =3*25=75
(3a)² =(3*5)² =15² =225
3a³=3*5³=3*125=375
a=-5
3a² = 75
(3a)² =225
3a³=-375
a=0.2
3a² = 0.12
(3a)² =0.36
3a³=0.024
a=-0.2
3a² = 0.12
(3a)² =0.36
3a³=-0.024
a=1/3
3a² = 3*1/9 = 1/3
(3a)² =(3*1/3)²=1
3a³=3*1/27=1/9
a=-1/3
3a² = 1/3
(3a)² =1
3a³=-1/9
a=0
3a² = 0
(3a)² =0
3a³=0
a=1/6
3a² =1/12
(3a)² =1/4
3a³=1/72