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[主观题]
如果方程lg2x+(lg2+lg3)1g x+lg2×193=0的两个根分别是x1,x2,那么x1·x2=()A.lg2×lg3B.
如果方程lg2x+(lg2+lg3)1g x+lg2×193=0的两个根分别是x1,x2,那么x1·x2=()
A.lg2×lg3
B.lg2+lg3
C.1/6
D.-6
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如果方程lg2x+(lg2+lg3)1g x+lg2×193=0的两个根分别是x1,x2,那么x1·x2=()
A.lg2×lg3
B.lg2+lg3
C.1/6
D.-6