(a-1/a+1-a+1/a-1)(1/2-a/4-1/4a),求过程。
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2013-05-01 · 知道合伙人教育行家
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(a-1/a+1-a+1/a-1)(1/2-a/4-1/4a),
=[(a-1)²/(a+1)(a-1)-(a+1)²/(a+1)(a-1)][2a/4a-a²/4a-1/4a]
=[(a-1)²-(a+1)²]/(a+1)(a-1)*[-(a²-2a+1)/4a]
=-4a/(a+1)(a-1)*[-(a-1)²/4a]
=(a-1)/(a+1)
数学辅导团为您解答,不理解请追问,理解请及时选为满意回答!(*^__^*)谢谢!
(a-1/a+1-a+1/a-1)(1/2-a/4-1/4a),
=[(a-1)²/(a+1)(a-1)-(a+1)²/(a+1)(a-1)][2a/4a-a²/4a-1/4a]
=[(a-1)²-(a+1)²]/(a+1)(a-1)*[-(a²-2a+1)/4a]
=-4a/(a+1)(a-1)*[-(a-1)²/4a]
=(a-1)/(a+1)
数学辅导团为您解答,不理解请追问,理解请及时选为满意回答!(*^__^*)谢谢!
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