Question

2^{х+3} - 2^{х} =112

Answer 1

$2^{x+3}-2^{x}=112 \ 2^{x} cdot 8 - 2^{x}=112 \ 2^{x} cdot (8-1)=112 \ 2^x= frac{112}{7} \2^{x}=16 \ x=4$