计算(lg2)²+(lg5)²+2lg2*lg5
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计算(lg2)²+(lg5)²+2lg2*lg5计算(lg2)²+(lg5)²+2lg2*lg5计算(lg2)²+(lg5)²+2lg2*l
计算(lg2)²+(lg5)²+2lg2*lg5
计算(lg2)²+(lg5)²+2lg2*lg5
计算(lg2)²+(lg5)²+2lg2*lg5
(lg2)²+(lg5)²+2lg2*lg5 =(lg2+lg5)²=(lg10)²=1
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