(x1+2)/(x1-1)-(x2+2)/(x2-1)化解乘积形式

题目详情

(x1+2)/(x1-1)-(x2+2)/(x2-1) 化解乘积形式

▼优质解答

答案和解析

(x1+2)/(x1-1)-(x2+2)/(x2-1)
=(x1-1)/(x1-1)+3/(x1-1)-[(x2-1)/(x2-1)+3/(x2-1)]
=3/(x1-1)-3/(x2-1)
=3(x2-x1)/[(x1-1)(x2-1)]

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