Question

B) 81 x 3 la puterea a 7 x 3 la puterea a 8​

Answer 1

Răspuns:                              

Explicație pas cu pas:

$\bf a)~~2^{10} \cdot 32=2^{10} \cdot 2^{5}=2^{10+5}=\red{2^{15}}$

$\bf b)~~81 \cdot 3^{7} \cdot 3^{8}=3^{4}\cdot 3^{7} \cdot 3^{8}=3^{4+7+8}=\purple{3^{19}}$

$\bf c)~~ 2^{17} \cdot 4^{5}=2^{17}\cdot \Big(2^{2} \Big)^{5}= 2^{17}\cdot 2^{2\cdot5} =2^{17+10}=\pink{2^{27}}$

Answer 2

Răspuns:

81·3⁷3⁸=3⁴·3⁷·3⁸=3⁴⁺⁷⁺⁸=3¹⁹

2¹⁷·4⁵=2¹⁷·(2²)⁵=2¹⁷·2²ˣ⁵=2¹⁷·2¹⁰=2¹⁷⁺¹⁰=2²⁷