a) 3²⁰* 2²⁰ - 6²³ : 6³ =
=3²⁰* 2²⁰ - 6²⁰ =
=6²⁰-6²⁰=0
b) 2¹⁸ * 12¹⁸ : ( 6¹⁶ * 4¹⁶) =
=2¹⁸ *2³⁶ *3¹⁸ : 2¹⁶ * 3¹⁶ *2³²=
=2⁵⁴ *3¹⁸ : 2⁴⁸ * 3¹⁶=
=2⁶ *3²=64*9=576
c) 75³⁸ : 25³⁸ - (3¹⁹)²=
=3³⁸ *25³⁸ : 25³⁸ - 3³⁸ =
=3³⁸ - 3³⁸ =0
d) 26²⁷ : 13²⁷ :( 2⁵)²=
= 2²⁷ *13²⁷ : 13²⁷ : 2¹⁰ =
= 2²⁷ : 2¹⁰ =2¹⁷
e) 10⁶⁴ : 2⁶⁴ - (5⁴)³=
= 2⁶⁴ * 5⁶⁴ : 2⁶⁴ - 5¹²=
= 5⁶⁴ - 5¹²=
=5¹²(5⁵²-5⁰)=
=5¹²(5⁵²-1)