100道一元二次方程计算题

1、WORD格式可编辑专业技术知识共享2(1) x =642(2) 5x -=02(3) (x+5) =16(7) 3x(x+2)=5(x+2)2(9) x + 2x + 3=02(4) 8 ( 3 -x )- 72=02(5) 2y=3y(6) 2 (2x 1) x (1 2x=02(8) (1 3y) +2 (3y - 1) =02 2(10) x + 6x 5=0(11) x 4x+ 3=0(12) x 2 2x 1 =0(13) 2x+3x+1=0(14) 3x2+2x 1 =02(15) 5x 3x+2 =0(16) 7x4x 3 =0(17) x22-x+12 =02x 6x+9 =0

2、4x2 一1 =02、(x 一3)2 =22y6y6 二 03、x -1 2 =54、81x -2 2 =162 22、3x 2 = 4x 3 、x 4x = 96 42 2x 4x5 = 05、2x 3x1 = 06、3x2 亠 2x -7=0x2 - 2x - 8 = 0422x 5x 1 = 01、x2 = 2x 2、(x 1)2 -(2X-3)2 =034、4(x 3)2 =25(x_2)2 5(1.2)x2 _(1 _、2)x = 06、(2-3x)(3x-2)2 =0Iz- =Xg -严920= 2 XZ- 2x9920=2kXx 七乙0= Z+X6乙)<£02 乙

3、=(L- Aj c+ A)山ZV(L-x)C=( L-x)xtz、14K仃一人1乙+人'0L0 = 0£-xz_、0 =人一乙人£、80=乙一 J L-xg) 、L0=(£-x)x+ j£_x)tz99=(乙 +xQx)90= 0lz+xZ-乙X 形0 = 9 +人乙乙x乙 (9+ x)x=( x)xg h卫魁 ado/vWORD格式可编辑专业技术知识共享30、3x? =4x 132、x2 -4 =5x33、2x2 -5x -4 = 0232、x -4 =5x 332、2x -5x-4 = 034、x x 6 =11237、x2 x3 =0382

4、 2、x x = 141、5y = 2y 142、2x2 9x 7 =02?+l = 3xy2+2y-3=04x 2+x-5=024x -3x=032(x+1) =3.63x2-6i + ?-(5-2x)3(2) 2 (2x 3) 3x (2x 3) =02(1) x 4x+4=02(2) 8y 2=4y1) (y-2)2 =3 ；(2) (2x 3)2 =3(4x 3)；(3) x2 -3x-2 = 0 ；(4) (x-1)(x 2) =5 .x2=4(2)x2=16(3)2x2=32(4) 一 2 x2=82 .(5)(x+1)2=0(6)2(2x 1)=7)(22x+1) =02(8)(2 x 1) =1(9) 1 (2 x+1)2=322(10) ( x+1) 144=02 1 2(1) 2x2+3x 2=0(2)x2+x 2=0、4222x +3x+1=02、2y + y- 6=03、6x2 = 11x-34、(x-2 ) (x-3) =4 6、6x2+x-35=0= 3(x