Question

Rezolvați ex7!!!!


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Answer 1

Răspuns:

Explicație pas cu pas:

a)(2/3)^n=16/81=2^4/3^4=(2/3)^4   ⇒n=4

b) (3/2)^n=3375/1000=135/40=27/8=(3/2)³   ⇒n=3

c)(1/7)^n=1/343=(1/7)³        ⇒n=3

d)(5/2)^n=125/8=(5/2)³    ⇒n=3