Question

帮忙解道数学题

如果a=100，则a/a-2 - a+2/a²-2a +1/a的值是【 】 要解题过程

Answer 1

原式=a/(a-2)-(a+2)/a(a-2)+1/a
=[a²-(a+2)+(a-2)]/a(a-2)
=(a²-a-2+a-2)/a(a-2)
=(a+2)(a-2)/a(a-2)
=(a+2)/a
=102/100
=1.02