rozwiąż równanie
16-17ײ+×⁴=0
x4+17-1-17x2=0
(x4-1)-17(x2-1)=0
(x2-1)(x2+1)-17(x2-1)=0
(x2-1)[(x2+1-17]=0 <=> x=1, x=-1, x=4, x=-4
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x4+17-1-17x2=0
(x4-1)-17(x2-1)=0
(x2-1)(x2+1)-17(x2-1)=0
(x2-1)[(x2+1-17]=0 <=> x=1, x=-1, x=4, x=-4