使分式x^2-5x-6/x+1(x^2-5x-6)/(x+1)惪值等于零、那么x等于多少?
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使分式x^2-5x-6/x+1(x^2-5x-6)/(x+1)惪值等于零、那么x等于多少?使分式x^2-5x-6/x+1(x^2-5x-6)/(x+1)惪值等于零、那么x等于多少?使分式x^2-5x-
使分式x^2-5x-6/x+1(x^2-5x-6)/(x+1)惪值等于零、那么x等于多少?
使分式x^2-5x-6/x+1
(x^2-5x-6)/(x+1)惪值等于零、那么x等于多少?
使分式x^2-5x-6/x+1(x^2-5x-6)/(x+1)惪值等于零、那么x等于多少?
(x^2-5x-6)/(x+1)=0
(x+1)(x-6)/(x+1)=0
因为x=-1时分式无意义,所以x≠1
x+1≠0
分式简化为x-6=0
x=6
(x^2-5x-6)/(x+1)=(x+6)(x-1)/(x+1)x=1,-6时,其值为0
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