January 2019 0 12 Report
Zapisz w jak najprostszej postaci.

a) (x - 2) - (2 - x)

b) (a + b) + (2a - b) - (a - 2b)

c) (3x - y + 1) - (x + y) + (y - x)
d) -(2a{do potegi 2} - 3ab) - (2b - 3a{do potegi 2}) + (-ab - b)

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