Równania kwadratowe(x-3)do kwadratu=9
(x-3)²=9
|x-3|=3
x-3=3 v x-3=(-3)
x=6 v x=0
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(x-3)²=9
|x-3|=3
x-3=3 v x-3=(-3)
x=6 v x=0