Can you help me with this exercise please? 2^x+2^x-1+2^x-2=7 ( it's a exponential function) thanks
Can you help me with this exercise please? 2^x+2^x-1+2^x-2=7 ( it's a exponential function) thanks
Гость
Ответ(ы) на вопрос:
Гость[latex] 2^{x}+ 2^{x-1}+ 2^{x-2} =7 [/latex]
[latex] 2^{x}+ 2^{x} * \frac{1}{2}+ x^{x}* \frac{1}{4} =7[/latex]
[latex] 2^{x} *(1+ \frac{1}{2}+ \frac{1}{4} )=7[/latex]
[latex] 2^{x}=7: \frac{7}{4} 2^{x}=4 2^{x} = 2^{2} x=2 [/latex]
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