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te rog frumos ajutor​

Te Rog Frumos Ajutor class=

Răspuns :

Salut,

[tex]2^{-1}+2^{-2}=\dfrac{1}{2}+\dfrac{1}{2^2}=\dfrac{1}{2}+\dfrac{1}{4}=\dfrac{2\cdot 1+1}{4}=\dfrac{3}{4}=\dfrac{3\cdot 25}{4\cdot 25}=\dfrac{75}{100}=0,75.[/tex]

A fost greu ?

Green eyes.