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y=a(x-p)²+q
W(p,q)=(1,0)
2.
a3=14
a11=34
a1+2r=14 /*(-1)
a1+10r=34
-a1-2r=-14
a1+10r=34
8r=20
r=20/8=5/2= 2,5
współrzędne wierzchołka (-1,0)
2) a3=a1+2r
a11=a1+10r
a1+2r=14 /*-1
a1+10r=34
-a1-2r = -14
a1+10r = 34
----------------------- dodajemy stronami
8r=20 /:8
r=2,5