方程log(x-1)(3x^2-7x-2)=2的解集是多少,
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方程log(x-1)(3x^2-7x-2)=2的解集是多少,
方程log(x-1)(3x^2-7x-2)=2的解集是多少,
方程log(x-1)(3x^2-7x-2)=2的解集是多少,
依题意得3x^2-7x-2=(x-1)的平方;化简得2x^2-5x-3=0,所以x=3;或x=-1/2(代入检验(底数真数要大于0)知x=3是原方程的解.
方程log(x-1)(3x^2-7x-2)=2的解集是多少,
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