若2*8^m*16^m=2^22求m

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若2*8^m*16^m=2^22求m
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若2*8^m*16^m=2^22求m
若2*8^m*16^m=2^22求m

若2*8^m*16^m=2^22求m
2*8^m*16^m
=2x(2^3m)x(2^4m)
=2^(1+3m+4m)
=2^(7m+1)
7m+1=22
7m=21
m=3