a-1=-2
a=-2+1
a=-1
b²=4
b²-4=0
(b+2)(b-2)=0
b=-2 v b=2
Odp. a=-1, b=-2 lub b=2.
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a-1=-2
a=-2+1
a=-1
b²=4
b²-4=0
(b+2)(b-2)=0
b=-2 v b=2
Odp. a=-1, b=-2 lub b=2.