Question

решите 3 номер пожалуйста

Answer 1

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Answer 2

$2*2^{x+3}+7*2^{x+2}=50 \\ \\ 2*2^x*8+7*2^x*4=50 \\ \\ 16*2^x+28*2^x=50 \\ \\ 2^x*44=50 \\ \\ 2^x= \frac{25}{22} ==\ \textgreater \ x=log_{2} \frac{25}{22}$