Question

Tim x:

2^x + 2^{x + 1} = 96

Answer 1

2^x + 2^{x + 1} = 96

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

=>2^x.3=96

=> 2^x=96:3=32

=> 2^x=32=2⁵

=> x=5

Vây x=5

Answer 2

2^x + 2^x+1 = 96

2^x + 2^x . 2 =96

2^x . (1 + 2)= 96

2^x. 3 = 96

2^x    = 96:3=32

mà 32 = 2⁵ => x = 5

Vậy x = 5