Question

determinati termnul necunoscut: ​

Answer 1

Răspuns:

$8^{x}$=$2^{3x}$     $4^{x} =2^{2x}$

$2^{3x}$ * $2^{x}$*$2^{2}$*$2^{2x}$ = $2^{3x}$*$2^{11}$

3x+x+2+2x= 3x+11

6x+2=3x+11    6x-3x= 11-2   3x=9  x= 3

verif 8³*2³⁺² *4³= 2⁹⁺¹¹

2⁹*2⁵*2⁶= 2⁹⁺⁵⁺⁶= 2¹⁴⁺⁶= 2²⁰

2⁹⁺¹¹= 2²⁰