Question

Daca 3 la puterea 63 : la 3 la puterea X = 3 la puterea 21 , atunci A) X>65 B)X=65 C)X=65 si X= 44 D)X=44

Answer 1

3⁶³ : 3 ˣ = 3²¹

3 ˣ = 3⁶³ : 3²¹

3 ˣ = 3 ⁽ ⁶³ ⁻ ²¹ ⁾

3 ˣ  = 3⁴² ⇒    x = 42