资源描述
(1) (2) (3) 3x(x-3) =2(x-1) (x+1)
(4) (5) (6)
(7) (8) x(x+1)-5x=0 (9) (x+1) 2-3 (x+1)+2=0
(10) (11) (12)
(13) (14)(x+5)2=16 (15) 2(2x-1)-x(1-2x)
(16)5x2 - 8(3 -x)2 –72=0 (17) 3x(x+2)=5(x+2) (18) x+ 2x + 3=0
(19) x+ 6x-5=0 (20) -3x 2+22x-24=0 (21) x-2x-1 =0
(22) 2x+3x+1=0 (23) 3x+2x-1 =0 (24) x-3x+2 =0
(25) 7x-4x-3 =0 (26) -x-x+12 =0 (27)
(28) (29) x2-2x-4=0 (30) (x+1)(x+8)=-12
(31)3x 2+8 x-3=0 (32) (3x+2)(x+3)=x+14 (33)(1-3y)2+2(3y-1)=0
(34)7x=4x2+2 (35) (36)
(37) 4(x-3)2=25 (38) (39)
(40) (41) (42)
(43)-3x 2+22x-24=0 (44) 2x(x-3)=x-3. (45)3x2+5(2x+1)=0
(46)(x-2) 2=(2x-3)2 (47) (48)
(49)x2-2x+3=0 (50)9
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