Ответ:
5a
3
−a
2
+3a
4
−7+(∗)=2a
−3a
(∗)=5a
−7+2a
+a
−7−3a
(∗)=3a
+5a
−3a−7
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Ответ:
5a
3
−a
2
+3a
4
−7+(∗)=2a
2
−3a
(∗)=5a
3
−a
2
+3a
4
−7+2a
2
−3a
(∗)=5a
3
+a
2
+3a
4
−7−3a
(∗)=3a
4
+5a
3
+a
2
−3a−7