Question

2的X次方等于3 ,4的Y次方等于3分之8 ,问X+2Y的值为多少

Answer 1

2^X=3 ,4^Y=8/3 ,

2^X * 4^Y = 3 * 8/3

2^X * (2^2)^Y = 8

2^X * 2^(2Y) = 2^3

2^(X+2Y) = 2^3

X+2Y=3