E3.
a)2·2²·2³·2⁴·2⁵·2⁶=2⁽¹⁺²⁺³⁺⁴⁺⁵⁺⁶⁾=2²¹
b)3¹⁵·(3⁴)⁵:(3³)¹¹=3¹⁵·3²⁰:3³³=3³³:3³³=1
c){[(2³)⁴]⁵}⁶=2³°⁴°⁵°⁶=2²⁰°¹⁸=2³⁶⁰
d)3³⁰+3³⁰=2·3³⁰
e)3¹⁵+3¹⁵+ 3¹⁵=3¹⁵3=3¹⁶
E4.
a)4¹²:4¹⁰=4²
b)9²³·9⁷:9²⁸=9³⁰:9²⁸=9²
c)(13³)¹⁰:13²⁹=13³⁰:13²⁹=13
d)10³·10⁵:10⁷=10¹⁵:10⁷=10⁸
e)(2²)¹³:(2¹⁶)²:2⁴=2²⁶:2³²:2⁴=2⁻¹⁰
f)7⁻³
Reguli de calcul folosite
tᵃ·tᵇ=tᵃ⁺ᵇ
tᵃ:tᵇ=tᵃ⁻ᵇ
(tᵃ)ᵇ=tᵃ°ᵇ