Pomozcie dam naj... Rozwiaz rownanie: a/ 49x^2+ 140x +100=0 b/ x^2+6x+9=(2x-1)^2, c/ 3x^2x+1 =3x+4x^2-3, d/ 4-1/4x^2-3x =x^2+2x+9, e/(2x-4)(x-10)=(x+6)(x-10), f/x(3-x)=(2x+1)9x+2)-1, g/ (x-1)(x+2)=(2x-3)(x+4) h/ (2x-1)^2 = (3-x)(x-6)