摘要:..根据上面各组式子所反映的规律.回答问题:
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观察下列各式:
1-
=
×
;1-
=
×
;1-
=
×
.…
根据上面的等式所反映的规律,填空:1-
=
×
×
,1-
=
×
×
.
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| 42 |
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根据上面的等式所反映的规律,填空:1-
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