2^x+3 + 2^x+2^x-1=38 R=2.... Pergunta de ideia deFranciellygaldino

Franciellygaldino @Franciellygaldino

January 2020 1 102 Report

2^x+3 + 2^x+2^x-1=38

R=2

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albertrieben Oi Francielly

2^(x + 3) + 2^x + 2^(x - 1) = 38

8*2^x + 2^x + 2^x/2 = 38

16*2^x + 2*2^x + 2^x = 76

2^x*(16 + 2 + 1) = 76

2^x*19 = 76

2^x = 76/19 = 4

2^x = 2^2

x = 2

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