January 2019 2 13 Report
1.Udowodnij rownosc (a+2)kwadrat-(a-2)kwadrat=8a

2.Udowodnij,ze podane rownania kwadratowe maja te same rozwiazania 1.2(x-4)(x-6)=0
2. 2(x-5)kwadrat=2
3.-20x+48=-2xkwadrat

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