6x/x方-1 + 5/x-1 = x+4/x+1
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6x/x方-1+5/x-1=x+4/x+16x/x方-1+5/x-1=x+4/x+16x/x方-1+5/x-1=x+4/x+16x/x方-1+5/x-1=x+4/x+1两边同乘(x+1)(x-1)6x
6x/x方-1 + 5/x-1 = x+4/x+1
6x/x方-1 + 5/x-1 = x+4/x+1
6x/x方-1 + 5/x-1 = x+4/x+1
6x/x方-1 + 5/x-1 = x+4/x+1 两边同乘(x+1)(x-1)
6x+5(x+1)=(x+4)(x-1)
6x+5x+5=x^2+3x-4
x^2-8x-9=0
(x-9)(x+1)=0
x1=9 x2=-1 (舍)
5/x方+x-1/x方-x=0
4(X方+3X+1)方-(X方+X-4)方-(X方+5X+6)方因式分解
(X+3)方-(1-X)方=6,求X
2(6X方+X)方-11(6X方+X)+5X四次方-10X方+9X三次方-7X方+12X(X+Y)方+2(X+Y)-15A四次方-21A方-100(X方+X)方-14(X方+X)+24X方(X-1)-Y方(X-1)
x方-5x+1=0,求x方+x方分之1的值?
几道因式分解.x方-2x-3 x方+7x-18 x方-3x-4 x方+5x-6 x方-13x+36 2x方+3x+1
6x/x方-1 + 5/x-1 = x+4/x+1
已知:x方=1-x(x
因式分解 10X-4.9X方= X(X-2)+X-2= 4x方-1+= (X-4)方-(5-2x)方=
3(x方+6x+1)方+5(x方+6x+1)(x方+1)+2(x方+1)方
.(x-1)/(x方+3x+2),(5+x)/(x方-x-6),(x-7)/(x方-2x-3)把它们通分
求3x方-2{x-5[x-3(x-2x方)-3(x方-2x)]-(x-1)}的值,其中x=2
已知方程2X方-6X-1-5根号X方-3X-1=4,求X.
求代数式的值6x+2x方-3x+x方+1其中x=-5
8/(x方+x)+2/(x方-x)=4/(x方-1)
解方程 1-1/(x方+7x+6)=(x方-5x+5)/(x方-5x+6)
解下列二元一次方程:6x方-7x+1=0和5x方-18=9x和4x方-3x=52
3(x-3)方=1/3(x+5)方,