O ecuatie simpla .. pentru voi

DaKurlzz · Posted: 22-01-2015, 21:19:30 | Translate post to: ... (Click for more languages)

Salut . Cine stie cum se rezolva ecuatia asta .. ?
8 la puterea x = 2 la puterea x-2 ( x-2 e puterea lui 2 )

Fast va rog !

Radical · Posted: 22-01-2015, 22:14:07 | Translate post to: ... (Click for more languages)

DaKurlzz wrote:

Salut . Cine stie cum se rezolva ecuatia asta .. ?
8 la puterea x = 2 la puterea x-2 ( x-2 e puterea lui 2 )

Fast va rog !

8 la puterea x = 2 la puterea 3x
deci ai 2 la puterea 3x = 2 la puterea x-2
deci 3x=x-2
deci 2x=-2
deci x=-1
8^-1 =1/8
2^-3=1/2^3 = 1 /8

tudor1297 · Posted: 22-01-2015, 22:16:00 | Translate post to: ... (Click for more languages)

8^x = 2^(x-2) =>
2^(3x) = 2^(x-2) =>
3x = x-2
=> 2x = -2 => x=-1

[RO]Warrior Fury PvE Guide 5.4.8

[EN]Warrior Fury PvE Guide 5.4.8