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Cum se face 8^x=4^2x+1 ?

Răspuns :

GreenEyes71
[tex]8^x=4^{2x+1}\Rightarrow (2^3)^x=(2^2)^{2x+1}\Rightarrow 2^{3x}=2^{4x+2},\\deci\ 3x=4x+2,\ adic\breve{a}\ x=-2.[/tex]

Green eyes.
8^x=4^2x+1
(2^3)^x=(2^2)^2x+1
2^3x=2^4x+2
3x=4x+2
-x=2
x=-2