已知2的x次方等于a,2的y次方等于b,求2x-y的次方+2的3x+2y的次方的值,

2^x=a2^y=b2^(x-y)+2^(3x+2y)=2^x÷2^y+(2^x)^3(2^y)^2=a/b+a³b²=(a+a³b³)/