已知2^m=3,2^n=4.求2^(m+n),2^(2m+2n)
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已知2^m=3,2^n=4.求2^(m+n),2^(2m+2n)已知2^m=3,2^n=4.求2^(m+n),2^(2m+2n)已知2^m=3,2^n=4.求2^(m+n),2^(2m+2n)2^(m
已知2^m=3,2^n=4.求2^(m+n),2^(2m+2n)
已知2^m=3,2^n=4.求2^(m+n),2^(2m+2n)
已知2^m=3,2^n=4.求2^(m+n),2^(2m+2n)
2^(m+n)=2^m*2^n=3*4=12
2^(2m+2n)=2^((m+n)*2)=2^(m+n)^2=12^2=144
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