人气:226 ℃ 时间:2020-01-29 18:07:33
解答
由方程x2+5x−6+ 3 x2−8x+5=3x−3≥0,∴x≥1,原方程可化为:(x+6)(x−1)+(3x−5)(x−1)=3(x-1),∴x-1=0,x=1,∴x+6+3x−5=3x−1,两边平方整理得,13x2-152x+220=0,∴(13x-22)(x-10)=0,解得...
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