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Rezolvati in multimea nr reale ecuatia 〖1/3)〗^(2x-3)=27
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Răspuns :

Mihaelap
(1/3)⁽²ˣ⁻³⁾ = 27
3⁻⁽²ˣ⁻³⁾ = 3³
- (2x - 3) = 3
- 2x + 3 = 3
- 2x = - 3 + 3
2x = 0
x = 0
HawkEyed
(1/3 )^( 2x-3) = (1/3) ^-3 
2x-3 = -3 
2x = -3+3 
2x = 0 
x = 0