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Exercitiul 1 va rog muult

Exercitiul 1 Va Rog Muult class=

Răspuns :

8²ˣ⁺³+8²ˣ⁺¹-8²ˣ=519x2²⁰¹⁰
8²ˣx8³+8²ˣx8-8²ˣ=519x2²⁰¹⁰
8²ˣ(8³+8-1)=519x2²⁰¹⁰
8²ˣ(512+8-1)=519x2²⁰¹⁰
8²ˣx519=519x2²⁰¹⁰
8²ˣ=2²⁰¹⁰
(2³)²ˣ=2²⁰¹⁰
2⁶ˣ=2²⁰¹⁰
6x=2010
x=2010:6
x=335⇒raspuns corect B)