a) 2³×2⁻²=2³⁻²=2¹=2.
b) 3⁷×3⁻⁶×3=3²=9.
c) (3²)⁻³=3⁻⁶=1/3⁶=1/729.
d) (1/3)⁵×(1/3)⁻³×1/3=(1/3)³=1/27...
