Rozwiąż krok po kroku ;
5-(a-1)(a-5)=
3-(a+1)(a+3)=
Prosze o szybkie rozwiaznie , potrzebne na jutro !!! ; )
5-(a-1)(a-5)=5-(a do kwadratu -6a+6)=5-a do kwadratu +6a-6=-1-a do kwadratu+6a
3-(a+1)(a+3)=3-(a do kwadratu+4a+4)=3-a do kwadratu-4a-4=-1-a do kwadratu-4a
Moim zdaniem to będzie tak:
5-(a kwadrat - 5a - a + 5)
5-a kwadrat + 5a + a - 5
- a kwadrat + 6a
3-( a kwadrat + 3a + a + 3)
3- a kwadrat - 3a - a - 3
- a kwadrat -4a
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5-(a-1)(a-5)=5-(a do kwadratu -6a+6)=5-a do kwadratu +6a-6=-1-a do kwadratu+6a
3-(a+1)(a+3)=3-(a do kwadratu+4a+4)=3-a do kwadratu-4a-4=-1-a do kwadratu-4a
Moim zdaniem to będzie tak:
5-(a-1)(a-5)=
5-(a kwadrat - 5a - a + 5)
5-a kwadrat + 5a + a - 5
- a kwadrat + 6a
3-(a+1)(a+3)=
3-( a kwadrat + 3a + a + 3)
3- a kwadrat - 3a - a - 3
- a kwadrat -4a