c与d互为倒数 ,c的平方d+d的平方-(c分之d+c-2)=
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发布时间:2023-06-01 12:45
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热心网友
时间:2024-12-12 11:25
c与d互为倒数
c=1/d
c的平方d+d的平方-(c分之d+c-2)=
= (1/d)²d+d²-d/(1/d)-1/d+2
=1/d+d²-d²-1/d+2
=2
热心网友
时间:2024-12-12 11:25
cd=1,
c²d+d²-(d/c+c-2)
=c+d²-(d²+c-2)
=c+d²-d²-c+2
=2
热心网友
时间:2024-12-12 11:26
c,d互为倒数,则cd=1
c^2d+d^2-[(c+d-2)/c]
=c+d^2-(1+d^2-2d)
=c-2d+1
热心网友
时间:2024-12-12 11:26
c、d互为倒数,则cd=1
则:c²d+d²-[d/c+c-2]
=c+d²-d/c-c+2
=d²-d/c+2
=[cd²-d]/c+2
=[d-d]/c+2
=2
热心网友
时间:2024-12-12 11:27
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