Question

已知2的2n+1次方+2的2n次方=48,求n的为多少?

Answer 1

2^(2n+1)+2^(2n)次方=48,

2 ^1 X 2^(2n)+2^(2n)次方=48

2^(2n) X (2+1)=48

2^(2n) =16

2^(2n) =2^4

2n =4

n =2