摘要：化简求值. (1)log2+log212-log242-1; 2+lg2·lg50+lg25; (3)(log32+log92)·(log43+log83). 解 (1)原式=log2+log212-log2-log22 =log2 +lg25=2lg2+lg25=lg100=2. (3)原式=(

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