February 2019 0 16 Report
Zapisz jak w najprostszej postaci (Dodawanie sum algebraicznych)
1. (x-2) - (2-x) = ...
2. (a+b) + (2a-b) + (a-2b) =
3. (3x-y+1) + (x+y) + (y-x) =
4. (2a²-3ab) + (2b - 3a²) + (-ab -b) =
5. (2a²-3ab) + (2b - 3a²) + (ab -b) =
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