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aJUUUTOOOOR,URGENT
Fie expresia din poza.Aratati ca E(x)=1,pentru orice x∈R / {-5;0;5}.


AJUUUTOOOORURGENT Fie Expresia Din PozaAratati Ca Ex1pentru Orice XR 505 class=

Răspuns :

[tex]E(x)=\dfrac{(x-5)(x+5)}{x(x+5)}+\dfrac{10}{x(x-5)}\cdot\dfrac{x-5}{2}=\dfrac{x-5}{x}+\dfrac{5}{x}=\dfrac{x-5+5}{x}=\dfrac{x}{x}=1.[/tex]

Green eyes.