要过程lg²5+lg2lg25+lg²2 怎么解lg²5+lg2lg25+lg²2 怎么解
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![要过程lg²5+lg2lg25+lg²2 怎么解lg²5+lg2lg25+lg²2 怎么解](/uploads/image/z/3177693-45-3.jpg?t=%E8%A6%81%E8%BF%87%E7%A8%8Blg%26%23178%3B5%2Blg2lg25%2Blg%26%23178%3B2+%E6%80%8E%E4%B9%88%E8%A7%A3lg%26%23178%3B5%2Blg2lg25%2Blg%26%23178%3B2+%E6%80%8E%E4%B9%88%E8%A7%A3)
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要过程lg²5+lg2lg25+lg²2 怎么解lg²5+lg2lg25+lg²2 怎么解
要过程lg²5+lg2lg25+lg²2 怎么解
lg²5+lg2lg25+lg²2 怎么解
要过程lg²5+lg2lg25+lg²2 怎么解lg²5+lg2lg25+lg²2 怎么解
解
lg²5+lg2lg25+lg²2
=lg²5+lg2lg5²+lg²2
=lg²5+2lg2lg5+lg²2
=(lg5+lg2)²
=(lg5×2)²
=(1g10)²
=1²
=1
原式=(lg5+lg2)^2=1
(lg5+lg2)²=1