x1满足2x+2fangx=5 x2满足2x+2log（x-1)=5 则 x1+x2=A -5\2 B 3 C 7\2 D 4

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x1满足2x+2fangx=5 x2满足2x+2log（x-1)=5 则 x1+x2=A -5\2 B 3 C 7\2 D 4
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x1满足2x+2fangx=5 x2满足2x+2log（x-1)=5 则 x1+x2=A -5\2 B 3 C 7\2 D 4
x1满足2x+2fangx=5 x2满足2x+2log（x-1)=5 则 x1+x2=
A -5\2 B 3 C 7\2 D 4

x1满足2x+2fangx=5 x2满足2x+2log（x-1)=5 则 x1+x2=A -5\2 B 3 C 7\2 D 4
log（x-1)
请问底在哪?!