Ответ:
(−
3
1
)
−(−
2
+1=−
27
−
9
+1=
−1−3+27
=
−4+27
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Ответ:
(−
3
1
)
3
−(−
3
1
)
2
+1=−
27
1
−
9
1
+1=
27
−1−3+27
=
27
−4+27
=