(1)計算:lg5(lg8+lg1000)+(
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)
2+lg+lg0.06;
(2)化簡
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(1)原式=lg5(3lg2+3)+3lg
22-lg6+lg6-2
=3lg5lg2+3lg5+3lg
22-2
=3lg2(lg5+lg2)+3lg5-2
=3lg2+3lg5-2
=3(lg2+lg5)-2
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=1.
(2)
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………………….3分
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………………….4分
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