若(5x-1)/(x+2)(2x-3)=M/(x+2)+N/(2x-3),求NM的值
来源:学生作业帮助网 编辑:六六作业网 时间:2024/11/26 03:01:34
若(5x-1)/(x+2)(2x-3)=M/(x+2)+N/(2x-3),求NM的值若(5x-1)/(x+2)(2x-3)=M/(x+2)+N/(2x-3),求NM的值若(5x-1)/(x+2)(2x
若(5x-1)/(x+2)(2x-3)=M/(x+2)+N/(2x-3),求NM的值
若(5x-1)/(x+2)(2x-3)=M/(x+2)+N/(2x-3),求NM的值
若(5x-1)/(x+2)(2x-3)=M/(x+2)+N/(2x-3),求NM的值
M/(x+2)+N/(2x-3)
=[M(2X-3)+N(X+2)]/(x+2)(2x-3)
=[(2M+N)X+(2N-3M)]/(x+2)(2x-3)
∵(5x-1)/(x+2)(2x-3)=M/(x+2)+N/(2x-3),
∴2M+N=5
2N-3M=-1
解得M=11/7,N=13/7
M/(x+2)+N/(2x-3)
=[M(2X-3)+N(X+2)]/(x+2)(2x-3)
=[(2M+N)X+(2N-3M)]/(x+2)(2x-3)
∵(5x-1)/(x+2)(2x-3)=M/(x+2)+N/(2x-3),
∴2M+N=5
2N-3M=-1
解得M=11/7,N=13/7
nm=11/7*13/7=143/49
*-----------------------------------------------*| 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-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(x+1)+(x+2)+(x+3)+(x+4)+(x+5) = 27求x
若x^3+x^2+x+1=0,求代数式1+x+x^2+x^3+x^4+x^5+...+x^2006+x^2007的值
x+2/x+1-x+4/x+3=x+6/x+5-x+8/x+7 x=?
写过程x(x-1)+2x(x+1)-3x(2x-5)-x(3x-2)+2x(2-x)=-5x(x-2)-4
若2x-3y+4=0则x(x*x-1)+x(5-x*x)-6y+7
x+2/x+1-x+3/x+2-x+4/x+3+x+5/x+4
若3x^2-x=1,求6x^3+7x-5x+2009
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
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)
x^5-x^4+x^3-x^2+x-1
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?