如果8的x+1次方/2的x+2次方=32,那么x=
问题描述:
如果8的x+1次方/2的x+2次方=32,那么x=
答
8^(x+1) / 2^(x+2) = 32
2^(3x+3) / 2^(x+2) = 2^5
2^(3x + 3 - x - 2) = 2^5
3x + 3 - x - 2 = 5
2x + 1 = 5
x = 2
答
-7/2
答
2..