若x^2+3x-(1)/(3)=0,则(x-3)/(3x^2-6x)/[x+2-(5)/(x-2)]的值是多少
若x^2+3x-(1)/(3)=0,则(x-3)/(3x^2-6x)/[x+2-(5)/(x-2)]的值是多少
数学人气:262 ℃时间:2020-04-30 04:18:57
优质解答
(x-3)/(3x^2-6x)/[x+2-(5)/(x-2)] =(x-3)/ (3x) /(x-2)/[x+2-(5)/(x-2)]=(x-3)/ (3x) /[(x+2)(x-2)- 5]=(x-3)/ (3x) /[x^2 - 9]= 1 / [3x(x+3)]= 1/3 /[x^2+3x] (x^2+3x-(1)/(3)=0,x^2+3x =1/3) =1/3 / (1/3...
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