11)
a) =45,9⁸⁺²²=45,9³⁰
b)=1,69¹³⁺⁸=1,69²¹
c)=17,85²³⁺¹⁷=17,85⁴⁰
d)=2,61⁶⁺⁷⁺⁸=2,61²¹
e)=2,2¹⁸⁺⁷=2,2²⁵
f)=8,4¹¹⁺⁶⁺¹=8,4¹⁸
12)
a)=1,5⁸⁻⁴=1,5⁴
b)=9,1¹⁶⁻⁷=9,1⁹
c)=0,8¹⁰⁻⁷=0,8³
d)=59,799²⁵⁻²⁵=59,799⁰=1
e)=18,9²²⁻¹¹=18,9¹¹
f)=4,1²⁶⁻²⁰⁻⁴=4,1²
g)=47,3⁹⁻⁴⁻⁵=47,3⁰=1
h)=1,48⁷⁺¹⁵⁻²¹=1,48¹=1,48
i)=0,13¹³⁻⁸⁺²=0,13⁷
