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128=2*2*2*2*2*2*2=2^7 128^x=(2^7)^x=2^7x 8*2^11=2^3*2^11=2^(3+11)=2^14 所以有14=7x x=2 所以有:(x-1)^2008=(2-1)^2008=1^2008=1
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