Question

Determinați numărul natural x știind ca :

Answer 1

Răspuns:

a) x = 4

b) x = 2

c) x = 2

Explicație pas cu pas:

a)

(2/3)^x = 16/81

(2/3)^x = (2/3)^4 ⇒ x = 4

b)

(1/7)^x = 2/98⁽²

(1/7)^x = 1/49

(1/7)^x = (1/7)^2 ⇒ x = 2

c)

(3/2)^x = 225/100⁽²⁵

(3/2)^x = 9/4

(3/2)^x = (3/2)^2 ⇒ x = 2