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v(x)=x²(x²+2)+1=x⁴+2x²+1
a=-1
v(x)=x²(x²+2)+1=x⁴+2x2+1={ze wzoru skróconego mnośenia}= (x2+1)2
v(x)=(x2+1)2
w(x)=(x2-a)2
-a=1
a=-1
v(x)=x²(x²+2)+1=x⁴+2x²+1
a=-1