b) = (5²)¹⁰ : 5¹⁸ - 24 =5²⁰⁻¹⁸ - 24 = 25-24=1
c) = 7⁴³ : ( 7²)²¹ +5¹⁰ : 5⁹ = 7⁴³⁻⁴² + 5¹⁰⁻⁹ = 7+5 = 12
f)= 2¹⁰ : ((2²)¹⁷ : 2²⁸) = 2¹⁰ : 2³⁴⁻²⁸ = 2¹⁰⁻⁶ = 2⁴ sau 16
g) = 3¹⁰ + 5²⁰⁻¹⁰ : 8⁹ = 3¹⁰+5¹⁰ : 8⁹ =8¹⁰ : 8⁹ = 8
