- 6ab - 9b + 3cb=14b do kwadratu + 7b - 21 bc
3ab - 12bc - 15cdo kwadratu b
- 6ab - 9b + 3cb=14b do kwadratu + 7b - 21 bc [jaki tu ma być znak ??]
3ab - 12bc - 15cdo kwadratu
-6ab-9b+3cb=-6a+18b+3c
14b kwadrat +7b-21bc = 196b+7b-21bc=203b-21bc=182b-21c
3ab-12bc-15c do kwadratu =3ab-12bc-225c=-9a-9b-237c
Mam nadzieje że dobrze
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- 6ab - 9b + 3cb=
14b do kwadratu + 7b - 21 bc [jaki tu ma być znak ??]
3ab - 12bc - 15cdo kwadratu
-6ab-9b+3cb=-6a+18b+3c
14b kwadrat +7b-21bc = 196b+7b-21bc=203b-21bc=182b-21c
3ab-12bc-15c do kwadratu =3ab-12bc-225c=-9a-9b-237c
Mam nadzieje że dobrze