Question

求数学一元二次方程60道，带过程及答案谢谢。

帮我找60道七年级的一元一次方程，带过程，切记带过程谢谢

Answer 1

数学一元二次方程如下：

(1)x^2-9x+8=0 答案：x1=8 x2=1

(2)x^2+6x-27=0 答案：x1=3 x2=-9

(3)x^2-2x-80=0 答案：x1=-8 x2=10

(4)x^2+10x-200=0 答案：x1=-20 x2=10

(5)x^2-20x+96=0 答案：x1=12 x2=8

(6)x^2+23x+76=0 答案：x1=-19 x2=-4

(7)x^2-25x+154=0 答案：x1=14 x2=11

(8)x^2-12x-108=0 答案：x1=-6 x2=18

(9)x^2+4x-252=0 答案：x1=14 x2=-18

(10)x^2-11x-102=0 答案：x1=17 x2=-6

成立条件

一元二次方程成立必须同时满足三个条件：

1、是整式方程，即等号两边都是整式，方程中如果有分母；且未知数在分母上，那么这个方程就是分式方程，不是一元二次方程，方程中如果有根号，且未知数在根号内，那么这个方程也不是一元二次方程（是无理方程）。

2、只含有一个未知数。

3、未知数项的最高次数是2。

Answer 2

(1)x^2-9x+8=0 答案：x1=8 x2=1

(2)x^2+6x-27=0 答案：x1=3 x2=-9

(3)x^2-2x-80=0 答案：x1=-8 x2=10

(4)x^2+10x-200=0 答案：x1=-20 x2=10

(5)x^2-20x+96=0 答案：x1=12 x2=8

(6)x^2+23x+76=0 答案：x1=-19 x2=-4

(7)x^2-25x+154=0 答案：x1=14 x2=11

(8)x^2-12x-108=0 答案：x1=-6 x2=18

(9)x^2+4x-252=0 答案：x1=14 x2=-18

(10)x^2-11x-102=0 答案：x1=17 x2=-6

(11)x^2+15x-54=0 答案：x1=-18 x2=3

(12)x^2+11x+18=0 答案：x1=-2 x2=-9

(13)x^2-9x+20=0 答案：x1=4 x2=5

(14)x^2+19x+90=0 答案：x1=-10 x2=-9

(15)x^2-25x+156=0 答案：x1=13 x2=12

(16)x^2-22x+57=0 答案：x1=3 x2=19

成立条件

一元二次方程成立必须同时满足三个条件：

①是整式方程，即等号两边都是整式，方程中如果有分母；且未知数在分母上，那么这个方程就是分式方程，不是一元二次方程，方程中如果有根号，且未知数在根号内，那么这个方程也不是一元二次方程（是无理方程）。

②只含有一个未知数。

③未知数项的最高次数是2。

Answer 3

(1)x^2-9x+8=0 答案：x1=8 x2=1
(2)x^2+6x-27=0 答案：x1=3 x2=-9
(3)x^2-2x-80=0 答案：x1=-8 x2=10
(4)x^2+10x-200=0 答案：x1=-20 x2=10
(5)x^2-20x+96=0 答案：x1=12 x2=8
(6)x^2+23x+76=0 答案：x1=-19 x2=-4
(7)x^2-25x+154=0 答案：x1=14 x2=11
(8)x^2-12x-108=0 答案：x1=-6 x2=18
(9)x^2+4x-252=0 答案：x1=14 x2=-18
(10)x^2-11x-102=0 答案：x1=17 x2=-6
(11)x^2+15x-54=0 答案：x1=-18 x2=3
(12)x^2+11x+18=0 答案：x1=-2 x2=-9
(13)x^2-9x+20=0 答案：x1=4 x2=5
(14)x^2+19x+90=0 答案：x1=-10 x2=-9
(15)x^2-25x+156=0 答案：x1=13 x2=12
(16)x^2-22x+57=0 答案：x1=3 x2=19
(17)x^2-5x-176=0 答案：x1=16 x2=-11
(18)x^2-26x+133=0 答案：x1=7 x2=19
(19)x^2+10x-11=0 答案：x1=-11 x2=1
(20)x^2-3x-304=0 答案：x1=-16 x2=19
(21)x^2+13x-140=0 答案：x1=7 x2=-20
(22)x^2+13x-48=0 答案：x1=3 x2=-16
(23)x^2+5x-176=0 答案：x1=-16 x2=11
(24)x^2+28x+171=0 答案：x1=-9 x2=-19
(25)x^2+14x+45=0 答案：x1=-9 x2=-5
(26)x^2-9x-136=0 答案：x1=-8 x2=17
(27)x^2-15x-76=0 答案：x1=19 x2=-4
(28)x^2+23x+126=0 答案：x1=-9 x2=-14
(29)x^2+9x-70=0 答案：x1=-14 x2=5
(30)x^2-1x-56=0 答案：x1=8 x2=-7
(31)x^2+7x-60=0 答案：x1=5 x2=-12
(32)x^2+10x-39=0 答案：x1=-13 x2=3
(33)x^2+19x+34=0 答案：x1=-17 x2=-2
(34)x^2-6x-160=0 答案：x1=16 x2=-10
(35)x^2-6x-55=0 答案：x1=11 x2=-5
(36)x^2-7x-144=0 答案：x1=-9 x2=16
(37)x^2+20x+51=0 答案：x1=-3 x2=-17
(38)x^2-9x+14=0 答案：x1=2 x2=7
(39)x^2-29x+208=0 答案：x1=16 x2=13
(40)x^2+19x-20=0 答案：x1=-20 x2=1
(41)x^2-13x-48=0 答案：x1=16 x2=-3
(42)x^2+10x+24=0 答案：x1=-6 x2=-4
(43)x^2+28x+180=0 答案：x1=-10 x2=-18
(44)x^2-8x-209=0 答案：x1=-11 x2=19
(45)x^2+23x+90=0 答案：x1=-18 x2=-5
(46)x^2+7x+6=0 答案：x1=-6 x2=-1
(47)x^2+16x+28=0 答案：x1=-14 x2=-2
(48)x^2+5x-50=0 答案：x1=-10 x2=5
(49)x^2+13x-14=0 答案：x1=1 x2=-14
(50)x^2-23x+102=0 答案：x1=17 x2=6

Answer 4

1)x^2-9x+8=0 答案：x1=8 x2=1
(2)x^2+6x-27=0 答案：x1=3 x2=-9
(3)x^2-2x-80=0 答案：x1=-8 x2=10
(4)x^2+10x-200=0 答案：x1=-20 x2=10
(5)x^2-20x+96=0 答案：x1=12 x2=8
(6)x^2+23x+76=0 答案：x1=-19 x2=-4
(7)x^2-25x+154=0 答案：x1=14 x2=11
(8)x^2-12x-108=0 答案：x1=-6 x2=18
(9)x^2+4x-252=0 答案：x1=14 x2=-18
(10)x^2-11x-102=0 答案：x1=17 x2=-6
(11)x^2+15x-54=0 答案：x1=-18 x2=3
(12)x^2+11x+18=0 答案：x1=-2 x2=-9
(13)x^2-9x+20=0 答案：x1=4 x2=5
(14)x^2+19x+90=0 答案：x1=-10 x2=-9
(15)x^2-25x+156=0 答案：x1=13 x2=12
(16)x^2-22x+57=0 答案：x1=3 x2=19
(17)x^2-5x-176=0 答案：x1=16 x2=-11
(18)x^2-26x+133=0 答案：x1=7 x2=19
(19)x^2+10x-11=0 答案：x1=-11 x2=1
(20)x^2-3x-304=0 答案：x1=-16 x2=19
(21)x^2+13x-140=0 答案：x1=7 x2=-20
(22)x^2+13x-48=0 答案：x1=3 x2=-16
(23)x^2+5x-176=0 答案：x1=-16 x2=11
(24)x^2+28x+171=0 答案：x1=-9 x2=-19
(25)x^2+14x+45=0 答案：x1=-9 x2=-5
(26)x^2-9x-136=0 答案：x1=-8 x2=17
(27)x^2-15x-76=0 答案：x1=19 x2=-4
(28)x^2+23x+126=0 答案：x1=-9 x2=-14
(29)x^2+9x-70=0 答案：x1=-14 x2=5
(30)x^2-1x-56=0 答案：x1=8 x2=-7
(31)x^2+7x-60=0 答案：x1=5 x2=-12
(32)x^2+10x-39=0 答案：x1=-13 x2=3
(33)x^2+19x+34=0 答案：x1=-17 x2=-2
(34)x^2-6x-160=0 答案：x1=16 x2=-10
(35)x^2-6x-55=0 答案：x1=11 x2=-5

Answer 5

(1)x^2-9x+8=0 答案：x1=8 x2=1
(2)x^2+6x-27=0 答案：x1=3 x2=-9
(3)x^2-2x-80=0 答案：x1=-8 x2=10
(4)x^2+10x-200=0 答案：x1=-20 x2=10
(5)x^2-20x+96=0 答案：x1=12 x2=8
(6)x^2+23x+76=0 答案：x1=-19 x2=-4
(7)x^2-25x+154=0 答案：x1=14 x2=11
(8)x^2-12x-108=0 答案：x1=-6 x2=18
(9)x^2+4x-252=0 答案：x1=14 x2=-18
(10)x^2-11x-102=0 答案：x1=17 x2=-6
(11)x^2+15x-54=0 答案：x1=-18 x2=3
(12)x^2+11x+18=0 答案：x1=-2 x2=-9
(13)x^2-9x+20=0 答案：x1=4 x2=5
(14)x^2+19x+90=0 答案：x1=-10 x2=-9
(15)x^2-25x+156=0 答案：x1=13 x2=12
(16)x^2-22x+57=0 答案：x1=3 x2=19
(17)x^2-5x-176=0 答案：x1=16 x2=-11
(18)x^2-26x+133=0 答案：x1=7 x2=19
(19)x^2+10x-11=0 答案：x1=-11 x2=1
(20)x^2-3x-304=0 答案：x1=-16 x2=19
(21)x^2+13x-140=0 答案：x1=7 x2=-20
(22)x^2+13x-48=0 答案：x1=3 x2=-16
(23)x^2+5x-176=0 答案：x1=-16 x2=11
(24)x^2+28x+171=0 答案：x1=-9 x2=-19
(25)x^2+14x+45=0 答案：x1=-9 x2=-5
(26)x^2-9x-136=0 答案：x1=-8 x2=17
(27)x^2-15x-76=0 答案：x1=19 x2=-4
(28)x^2+23x+126=0 答案：x1=-9 x2=-14
(29)x^2+9x-70=0 答案：x1=-14 x2=5
(30)x^2-1x-56=0 答案：x1=8 x2=-7
(31)x^2+7x-60=0 答案：x1=5 x2=-12
(32)x^2+10x-39=0 答案：x1=-13 x2=3
(33)x^2+19x+34=0 答案：x1=-17 x2=-2
(34)x^2-6x-160=0 答案：x1=16 x2=-10
(35)x^2-6x-55=0 答案：x1=11 x2=-5
(36)x^2-7x-144=0 答案：x1=-9 x2=16
(37)x^2+20x+51=0 答案：x1=-3 x2=-17
(38)x^2-9x+14=0 答案：x1=2 x2=7
(39)x^2-29x+208=0 答案：x1=16 x2=13
(40)x^2+19x-20=0 答案：x1=-20 x2=1
(41)x^2-13x-48=0 答案：x1=16 x2=-3
(42)x^2+10x+24=0 答案：x1=-6 x2=-4
(43)x^2+28x+180=0 答案：x1=-10 x2=-18
(44)x^2-8x-209=0 答案：x1=-11 x2=19
(45)x^2+23x+90=0 答案：x1=-18 x2=-5
(46)x^2+7x+6=0 答案：x1=-6 x2=-1
(47)x^2+16x+28=0 答案：x1=-14 x2=-2
(48)x^2+5x-50=0 答案：x1=-10 x2=5
(49)x^2+13x-14=0 答案：x1=1 x2=-14
(50)x^2-23x+102=0 答案：x1=17 x2=