March 2019 0 89 Report
Punkt S=(1,-2) jest środkiem odcinka Ab w którym A=(0,a) i B= (b, -9) wynika stąd że:
a.a=7 b=1
b.. a=-11/2 i b = 1/2
c.a=5 i b=2
d. a=7 i b=1
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