Question

Tìm x:

2^x+2 -2^x =96

Answer 1

       2^x+2 - 2^x = 96

<=> 2^x(2²-1) = 96

<=> 2^x (4-1) = 96

<=> 2^x . 3 = 96

<=> 2^x = 96 : 3

<=> 2^x = 32

<=>2^x = 2⁵

<=> x = 5

Vậy x = 5

Answer 2

2^x+2-2^x=96

=>2^x+2-2^x=2^x(36-1)=96

=>\(\text{2^x}=\frac{96}{35}\)

=>\(x\approx4.64385619\)

Answer 3

   2^x+2-2^x=96

2^x.2²-2^x=96

2^x(4 - 1)=96

2^x . 3=96

2^x = 32

2^x=2⁵

^x=5