wiedząc że x∈R i q∈R rozwiąż równanie z niewiadomą x.
a) x²-2px+(p²-1)=0
(x²-2px+p²)-1=0
(x-p)²-1=0
(x-p+1)(x-p-1)=0
x=p-1 v x=p+1
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(x²-2px+p²)-1=0
(x-p)²-1=0
(x-p+1)(x-p-1)=0
x=p-1 v x=p+1