5[x^2-x]=3[x^2+x][2x-3]^2=4[2x+3]
来源:学生作业帮助网 编辑:作业帮 时间:2024/05/17 01:43:25
5[x^2-x]=3[x^2+x][2x-3]^2=4[2x+3]
5[x^2-x]=3[x^2+x]
[2x-3]^2=4[2x+3]
5[x^2-x]=3[x^2+x][2x-3]^2=4[2x+3]
5(x^2-5x)=3x^2-3x=0
即2x^2-8x=0
解得x=0或4
(2x-3)^2=9(2x+3)^2
(2x-3)^2=[3(2x+3)]^2
2x-3=±3(2x+3)
x1=-4 x2=-3/4
第一道 x1=0,x2=4
第二道 X1=(5+2*sqrt(7))/2 X2=(5-2*sqrt(7))/2
错了,第一个是4或0
1。 5x^2_5x=3x^2+3x.
2x^2=8x
2. 4x^2+9-12x=8x+12
4x^2-20x=3
把1带入。
X=- 3/4
5[x^2-x]=3[x^2+x]
x^2-2x=0
x=0 x=2
[2x-3]^2=4[2x+3]
4x^2-20x-3=0
x=20±8√7/8
x=5±2√7/2
*-----------------------------------------------*| 6 4 X | 8 X X | X X 5 || X X X | X X X | X 7 8 || X X X | X X X | X X X ||---------------+---------------+--------------- || X X X | X X X | 5 1 X || X X X | X 6 X | X X X || 8 X X | 3 5 X | 2 X X ||
填九宫格帮帮忙.x x 6 x x 7 x x 98 x x x 3 x 1 x x 9 x x 6 x 5 x 3 x x x 3 x x x x 1 8x x x 9 x 1 x x x2 1 x x x x 6 x x x 6 x 7 x 3 x x 1 x x 9 x 2 x x x 47 x x 8 x x 5 x x
x+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少?
(x-3/x-2)-(x-2/x-1)=(x-5/x4) -(x-4/x-3)
解方程x/(x-2)=2x/(x-3)+(1-x)/(x-5x+6)
x(x-2)-2x(x+1)-3x(x-5) 其中x=负½
x-2x+3x-4x+5x.+99x-100x=25求解
2x+3x+4x+5x+x+6x+7x=100
x(x+1)+(x+2)+(x+3)+(x+4)+(x+5) = 27求x
x+2/x+1-x+4/x+3=x+6/x+5-x+8/x+7 x=?
x^5-2x^3+x=?
写过程x(x-1)+2x(x+1)-3x(2x-5)-x(3x-2)+2x(2-x)=-5x(x-2)-4
x(x*x-6x-9)-x(x*x-8x-15)+2x(3-x)
x+2/x+1-x+3/x+2-x+4/x+3+x+5/x+4
(x+3x+5x...+2009x)-(2x+4x+6x+...+2010x)
七年级下册政治复习提纲(山东人民出版社)第五单元是 青春的脚步 青春的气息别弄错了啊!格式:X X X X X X X X X 1、X X X X X X X X X X.2、X X X X X X X X X.3、X X X X X X X X X X X.
求一个数独答案X X X 9 X X X 8 2 X 6 3 X X 1 4 X 99 X 8 X X X X X XX X X 6 7 X 3 X XX 4 6 X 5 X 2 9 XX X 7 X 2 3 X X XX X X X X X 7 X 17 X 4 3 X X 6 2 X6 3 X X X 7 X X X
x/x-3-5x/x^2-x-6计算