79) a¹⁰=a⁴⁺⁶=a⁴ *a⁶
b¹²=b⁴⁺⁸ =b⁴ *b⁸
x¹¹=x³⁺⁸=x³*x⁸
3¹²=3⁵⁺⁷ =3⁵*3⁷
80) 5⁵/5⁴=5⁵⁻⁴=5¹=5
9¹²/9¹¹=9¹²⁻¹¹=9¹=9
0,8⁵/0,8³=0,8⁵⁻³=0,8²=0,64
( -1 1/2 )⁴ /-1 1/2=(-1 1/2)⁴⁻¹=(-1 1/2)³=(-3/2)³=-3³/2³=-27/8=-3 3/8
(2/3)⁷ /(2/3)⁴=(2/3)⁷⁻⁴=(2/3)³=2³/3³=8/27
( 1,3)⁹ :(13/10)⁷=1,3⁹ :1,3⁷=1,3⁹⁻⁷=1.3²=169