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Venus1
a fost răspuns

VA ROOOOOOOOOGGGGGGG UUUURRRRGGGGGEEEEENNNNNTTTTTAAAAAA!!!!!!!




DAU COROANA!!!!!!!

VA ROOOOOOOOOGGGGGGG UUUURRRRGGGGGEEEEENNNNNTTTTTAAAAAA DAU COROANA class=

Răspuns :

Cristidk
a)
2^x + 2^x+2 = 80
2^x + 2^x * 2^2 = 80
2^x + 2^x * 4 = 80
2^x * (1 + 4) = 80
2^x * 5 = 80
2^x = 80 : 5 => 2^x = 16 => x=4

b) 
(x-2)^4 = 9^2
(x-2)^4 = 3 * 3 * 3 * 3
(x-2)*(x-2)*(x-2)*(x-2) = 3*3*3*3
Deci x-2=3 =>x = 5

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