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x2 - 9 -2 = 2x -2 -4
x2 - 2x - 5= 0
i musisz zrobic rownanie kwadratowe
(2x+1)(2x-1)=
4x2 -2 =
2( 2x2 -1)
(2pierwiatek 3 +1/3)^2
4pierw 3 + 2/3
(0,5-0,1x)^2=
1 - 0.2x
(1+x)(4x-3)wieksze od 2
4x - 3 + 4x2 - 3x >2
4x + 4x2 - 3x > 5
x + 4x2 > 5
(1-2xy)^2=
2 - 4xy
2( 1 - 2xy)
4x^2+4xy+y^2=
8x +4xy + 2y
2( 4x + 2xy +y)