January 2019 1 55 Report
1.Wyrażenie (a + b + c− d)(a + b− c+ d) może być zapisane w postaci
A) (a + b)^2 − (c+ d)^2
B) (a+ b)^2 − (c − d)^2
C) (a − b)^2 − (c− d )^2
D) (a + b − c− d)^2

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