admin百科知識 2022-02-12 22:11:54 儅a+ba-b=3時,求a-b2a+2b+(a+ba-b)的2次方-5的值儅a b/a-b=3時,求a-b/2a 2b (a b/a-b)的2次方-5的值盡快網友廻答:匿名網友a b/a-b=3取倒數a-b/a b=-3所以原式=[(a-b)/2(a b)] 3²-5=(1/2)×[(a-b)/(a b)] 9-5=(1/2)×(1/3) 4=25/6 db標簽 生活常識_百科知識_各類知識大全»儅a+ba-b=3時,求a-b2a+2b+(a+ba-b)的2次方-5的值
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