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pierw z 2004 + pierw z 2006<2 pierw z 2005
pierw z (2005-1) + pierw z (2005+1)<2 pierw z 2005 /()^2 podnosze do kwadratu
(2005-1) + 2 pierw z (2005^2-1)+(2005+1)<4*2005
2*2005+2 pierw z (2005^2-1)<4*2005 /:2
2005+ pierw z (2005^2-1)<2*2005 /-2005
pierw z (2005^2-1) <2005 /()^2
2005^2-1 <2005^2 /-2005^2
-1<0 Prawda
a<b
^-do potegi
2^(8x+2)=2^x^2*4
2^(8x+2)=2^x^2 * 2^2
2^(8x+2)=2^(x^2+2)
8x+2=x^2+2 /-8x-2
x^2-8x=0
x(x-8)=0
x=0 lub x-8=0
x=0 lub x=8