x²+4x分之x+4与x(x-5)-2(x-5)分 - 知识问答

x²+4x分之x+4与x(x-5)-2(x-5)分之x-5化简

4个回答

(x+4)/(x^2+4x)
=(x+4)/[x(x+4)]
=1/x
=(x-2)/[x(x-2)
(x-5)/[x(x-5)-2(x-5)]
=(x-5)/[(x-5)(x-2)]
=1/(x-2)
=x/[x(x-2)]

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