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(1)原式= 3 2 -1- 4 9 + 4 9 = 1 2 ;
(2)原式= lg4+lg3 1+lg 0.36 +lg 3 8 = lg12 1+lg0.6+lg2 = lg12 lg10+lg0.6+lg2 = lg12 lg12 =1 .