December 2018 2 5 Report
Uzupełnij puste miejsca tak aby otrzymać poprawny wzór
a) x2 +6x + 9 = (x + ...)2
b) x2 - 10x + 25 = (x - ...) 2
c) 4x2 - 4a + 1 = (... - 1)2
d) 9x2 + 12x + 4 = (... + 2)2
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