Rozwiąż układ równań( po rozwiazaniu oblicz delte)
A) x2+ y2=1
x-y=1
B) x2+y2=8
x-y=4
a)
b)
Delta:
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a)
b)
Delta:![b^{2} -4ac = 16 -16 =0 b^{2} -4ac = 16 -16 =0](https://tex.z-dn.net/?f=b%5E%7B2%7D+-4ac+%3D+16+-16+%3D0)