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因式分解:(1)-1+0.01a² (2) 2a²x-2ax+2分之1x
人气:131 ℃ 时间:2020-01-28 00:45:03
解答
-1+0.01a²
=0.01a²-1
=(0.1a)²-1²
=(0.1a+1)(0.1a-1)
2a²x-2ax+2分之1x
=2分之1x(4a²-4a+1)
=2分之1x(2a-1)²
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