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2^x + 2^x+2 = 160
Dau coroana


Răspuns :

2ˣ + 2ˣ⁺² = 160
2ˣ(2⁰ + 2²) = 160
×(1+4) = 160
×5 = 160
2ˣ=160:5
2ˣ=32
2ˣ=2⁵
x=5