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ExoBlack123
a fost răspuns

Aflati x daca 2^3x + 4^x . 2^x+2 + 8^x+1 = 832

Răspuns :

Rapunzel15
2^3x + 4^x × 2^x+2 + 8^x+1 = 832

8^x + 2^2x × 2^x × 2^2 + 8^x × 8 = 832

8^x + 2^3x × 4+ 8^x × 8 = 832

8^x + 8^x × 4 + 8^x × 8 = 832

8^x × ( 1 + 4 + 8) = 832

8^x × 13 = 832

8^x = 832 : 13

8^x = 64

8^x = 8^2

x = 2
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