(求解、x+5)/(x-1)-(3x-3)/(x+5)=(8x+28)/(x^2+4x-5)-2
来源:学生作业学帮网 编辑:学帮网 时间:2024/05/15 18:55:56
(求解、x+5)/(x-1)-(3x-3)/(x+5)=(8x+28)/(x^2+4x-5)-2
(x+5)/(x-1)-(3x-3)/(x+5)=(8x+28)/(x^2+4x-5)-2
(x+5)/(x-1)-(3x-3)/(x+5)-(8x+28)/(x^2+4x-5)=-2
(x+5)^2/(x-1)(x+5)-3(x-1)^2/(x+5)-(8x+28)/(x+5)(x-1)=-2
[(x+5)^2-3(x-1)^2-(8x+28)]/(x+5)(x-1)=-2
[x^2+10x+25-3x^2+6x-3-8x-28]/(x+5)(x-1)=-2
[x^2-3x^2+10x+6x-8x+25-3-28]/(x+5)(x-1)=-2
(-2x^2+8x-6)/(x+5)(x-1)=-2
-2(x^2-4x+3)/(x+5)(x-1)=-2
(x^2-4x+3)/(x+5)(x-1)=1
x^2-4x+3=x^2+4x-5
4x+4x=3+5
8x=8
x=1
经检验x=1是方程的增根,所以方程无解
(x+5)/(x-1)-(3x-3)/(x+5)=(8x+28)/(x^2+4x-5)-2
左、右两边通分
((x+5)^2-3(x-1)^2)/((x-1)(x+5))=((8x-28)-2(x^2+4x-5))/((x-1)(x+5))
(x+5)^2-3(x-1)^2)=(8x-28)-2(x^2+4x-5)
x^2+10x+25-3x^2+6x-3=8x-28-2x^2-8x+10
-2x^2+16x-22=-2x^2+38
16x=16
x=1
x=260+x/3+x/4+x/5求解
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?
|5x-3|=|x+12|求解
(x-1)(x-3)=6求解
(求解、x+5)/(x-1)-(3x-3)/(x+5)=(8x+28)/(x^2+4x-5)-2
x-2x+3x-4x+5x.+99x-100x=25求解
求解方程1-x-2/3=1-x/5
2x²-3(x-5)²=1求解
240-x-30=(1-3/5)x 求解
9x-3=5x+4 求解X9x-3=5x+4求解X
求解X^3-5X+2=0求解 X^3-5X+2=0,
7x-3(2/3x+1/5x)-(x+2/5x)+2x 求解?
求解不等式 -3x²+5x-4>0 x(1-x)>x(2x-3)+1
求解 1/X(X+3)+1/(X+5)(X+6)+……+1/(X+99)(X+100)
求解5x(2x+1)-(2x+3)(5x-1)
1/(x+4)+1/(x+5)=1/(x+6)+1/(x+3)求解
求解32x^5+48x^3+24X^2+1=O,已知x
(X+1)(X–2)=3X+3求解