zał.2x-1≠0 i 2x+1≠0
x≠1/2 i x≠-1/2
x nalezy R\{-1/2,1/2}
sprowadzam do wspol miano
[2x(2x+1)-2(2x-1)]:[(2x-1)(2x+1)]>0
[4x²+2x-4x+2]:[(2x-1)(2x+1)]>0
[4x²-2x+2]:[(2x-1)(2x+1)]>0 zamieniam na postac iloczynoa
2[2x²-x+1](2x-1)(2x+1)>0
Δ=1-8=-7 x=-1/2 v x=1/2
rysujemy parabole do gory ramionami
x nalezy (-∞,-1/2)u(1/2,∞)
