2x-5/x=5-2x/5解分式方程~
2x-5/x=5-2x/5解分式方程~
數(shù)學人氣:917 ℃時間:2020-02-04 08:10:13
優(yōu)質(zhì)解答
(2X-5)/X=1-(5-2x)/5 5(2x-5)=x-5x+2xx 10x-25 =2xx-4x 2xx-14x+25=0 2(xx-7x)+25=0 2((x-3.5)(x-3.5)+12.25)+25=0 2(x-3.5)(x-3.5)+25+25=0 (x-3.5)(x-3.5)=-25 一個數(shù)的平方不等于復(fù)數(shù),所以方程無解
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