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ajutooor raaapiiid urgent

Ajutooor Raaapiiid Urgent class=

Răspuns :

2ˣ+2ˣ⁺¹+2ˣ⁺²=112

2ˣ+2ˣ×2+2ˣ×2²=112

2ˣ(1+2+2²)=112

2ˣ(1+2+4)=112

2ˣ×7=112

2ˣ=112:7

2ˣ=16

2ˣ=2⁴

x=4