September 2019 0 18 Report
Zadanie-
Dla dowolnych liczb a i d prawdziwa jest równość:
a)
(d-c)²=d²-c²
b)
c²+d²=(c+d)²
c)
c²-d²=(d+c)(c-d)
d)
(c-d)²=c²-2dc-d²

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