Question

已知2的2x+3次方减2的2x+1的次方=192,求x的值.

Answer 1

2^(2x+3)-2^(2x+1)=192

8*2^2x-2*2^2n=192,

6*2^2x=192,

2^2x=32,

2x=5,x=5/2