(6x+2)/(x^2+3x+2)=5-(2x^2+6x+4)/(3x+1)
来源:学生作业帮助网 编辑:作业帮 时间:2024/11/15 20:55:38
(6x+2)/(x^2+3x+2)=5-(2x^2+6x+4)/(3x+1)
(6x+2)/(x^2+3x+2)=5-(2x^2+6x+4)/(3x+1)
(6x+2)/(x^2+3x+2)=5-(2x^2+6x+4)/(3x+1)
(6x+2)/(x^2+3x+2)=5-(2x^2+6x+4)/(3x+1)
2(3x+1)/(x^2+3x+2)+2(x^2+3x+2)/(3x+1)-5=0
设(3x+1)/(x^2+3x+2)=y
则2y+2/y-5=0
2y^2-5y+2=0
(2y-1)(y-2)=0
解得y=1/2或y=2
则(3x+1)/(x^2+3x+2)=1/2或(3x+1)/(x^2+3x+2)=2
即x^2+3x+2=6x+2或2x^2+6x+4=3x+1
x^2-3x=0或2x^2+3x+3=0
解得x=0或x=3
综上可得方程解为x=0或x=3
*-----------------------------------------------*| 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?
解方程x/(x-2)=2x/(x-3)+(1-x)/(x-5x+6)
2x+3x+4x+5x+x+6x+7x=100
x+2/x+1-x+4/x+3=x+6/x+5-x+8/x+7 x=?
(x+3x+5x...+2009x)-(2x+4x+6x+...+2010x)
x(x*x-6x-9)-x(x*x-8x-15)+2x(3-x)
x/x-3-5x/x^2-x-6计算
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
1+x+x^2+x^3+x^4+x^5+x^6+x^7+x^8+x^9+x^10+x^11+x^12=97.8x+x^2+x^3+x^4+x^5+x^6+x^7+x^8+x^9+x^10+x^11+x^12=97.8 好多年没有用过过数学公式了 想不起来怎么算了 想知道 X值是多少
计算:x/x-2 - 5x/x²-x-6计算:x/x-3 - 5x/x²-x-6
如果1+x+x^2+x^3=0,求x+x^2+X^3+x^4+x^5+x^6+x^7+x^8的值,
已知x=2π+1求 |x-1|+|x-2|+|x-3|+|x-4|+|x-5|+|x-6|+|x-7|+|x-8|+|x-9|+|x-10|
已知x=2π+1.求(X-1)+(X-2)+(X-3)+(X-4)+(X-5)+(X-6)+(X-7)+(X-8)+(X-9)+(X-10)
1+x+x^2+x^3+x^4+x^5+x^6+x^7+x^8+x^9+x^10+x^11=17.7这个方程怎么样求解?
(x+3x+6/x+3x+2)--(x+5x+2/x+5x+6)=?
1/x-2 +3 =1-x/2-x 3/x + 6/x-1=x+5/x²-x