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(4/9) la x =(3/2) la - 5​

Răspuns :

Răspuns:

x=5/2=2,5

Explicație pas cu pas:

4/9=(2/3)²

atunci

(2/3) ^2x=((2/3)^(-1))^(-5)

(2/3) ^2x= (2/3) ^5

2/3=2/3

deci 2x=5

x=5/2=2,5

Răspuns:

Explicație pas cu pas:

4 = 2^2

9 = 3^2

4/9 = 2^2/3^2 = (2/3)^2

[(2/3)^2]^x = (2/3)^2x

(3/2)^-5 = (2/3)^5

_____________

(2/3)^2x = (2/3)^5

2x = 5

x = 5/2