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1、50道一元二次方程2x2=x+1 x2=2x-1 -x2=x-1 5x2=-2x+1 2x2=10x-1 -2x2=3x+1 -4x2=-x+1 2x2=-x+13 x2=5x+4 (11)x=x2-3 (12)x=-x2+1(13)2x=-x2-1 (14)x=3x2+1 (15)2x=3x2+2(16)x+2=x2 (17)x-2=x2 (18)2x-1=3x2(19) x-2x2 =1 (20) 2x-x2 =-1 (21)3x+x2 =-1(22)-x+x2 =-1 (23)3x-x2 =3 (24)3x-x2 =5(25) 1-2x=x2 (26) 1+x=x2 (27) 1-2x=
2、3x2(28) 2-x=-2x2 (29) 3+x=x2 (30) 1-x=-x2(31)x2-2=-x (32)x2+2=-2x (33)2x2-2=3x(34)2x2+2=-x (35)x2+3=2x (36)x2+1=-3x(37)x+2x2 =0 (38)x-2x2 =1 (39)x+3x2 =-1 (40)x-5x2 =1 (41)3x+5x2 =2 (42)x+5x2 =3 (43)2 x=x2-3 (44)3 x=x2+2 (45)5 x=x2-3(46)2 x=x2+3 (47)5 x=x2-23 (48)2 x=2x2+3(49)-3+x-2x2=0 (50)1-x-2x2=2x (51)1+x-3x2=3 (52)1-x-3x2=0
