(1)方程(1/x-a)-(1/x-b)=(1/x-c)-(1/x-d)的解(a、b、c、d表示不同的数,且a+d=b+c)。
(2)用你的猜想,求出(x-1)/(x-2)-(x-3)/(x-4)=(x-2)/(x-3)-(x-4)(x-5)的解~~~~~
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方程(1\/x-2)+(1\/x-5)=(1\/x-3)+(1\/x-4)的解是x=7\/2.方程(1\/x-7...
第一个方程中方程两边的分母中常数项的和都是7,x的值是7\/2,而(1\/x-a)-(1\/x-b)=(1\/x-c)-(1\/x-d)可变形为:(1\/x-a)+(1\/x-d)=(1\/x-c)+(1\/x-b),其中a+d=b+c,所以x=(a+d)\/2 (2)x=7\/2 (x-1)\/(x-2)-(x-3)\/(x-4)=(x-2)\/(x-3)-(x-4)(x...
解方程1\/(x-2)+1\/(x-8)=1\/(x-4)+1\/(x-6)
不要去分母,左边右边分别通分,分子上两边都是-2可以约去,然后就剩下两边分母(X-2)(X-4)=(X-6)(X-8),这样就可以解得X=5
方程x-1\/x-2-x-3\/x-4=x-2\/x-3-x-4\/x-5的解是x=7\/2 方程1\/x-7-1\/x...
答案是4 把最右边一项移到 等号左边,x的次数变成-7 另外一个已知是-11 -7那个结果是7\/2 -11那个结果是11\/2 同理知道所求方程应该是8\/2 结果为4 方程(x-1\/x-2)-(x-3\/x-4)=(x-2\/x-3)-(x-4\/x-5)解为x=7\/2,(1\/x-7)-(1\/x-5)=(1\/x-6)-(1\/x-4)解为x=11\/2 ...
1\/(x-2)+1\/(x-8)=1\/(x-4)+1\/(x+6 )方程
1\/(x-2)+1\/(x-8)=1\/(x-4)+1\/(x+6 )(x-8+x-2)\/(x-2)(x-8)=(x-6+x-4)\/(x-4)(x+6 )(2x-10)\/(x-2)(x-8)=(2x-10)\/(x-4)(x+6 )(2x-10)(x-2)(x-8)=(2x-10)(x-4)(x+6 )2x-10=0 x=5 经检验x=5是方程的解 ...
解方程1\/(x-2)+1\/(x-8)=1\/(x-4)+1\/(x-6)
通分:(2x-10)\/[(x-2)(x-8)]=(2x-10)\/[(x-4)(x-6)]所以2x-10=0 即x=5 或[(x-2)(x-8)]=[(x-4)(x-6)],即x^2-10x+16=x^2-10x+24,无解 因此原方程只有一根x=5
...题(1)解方程:1\/(x-7)+1\/(x-4)=1\/(x-6)+1\/(x-5)(2)已知(2x+3)_百度...
(1)解方程:1\/(x-7)+1\/(x-4)=1\/(x-6)+1\/(x-5)1\/(x-7)+1\/(x-4)=1\/(x-6)+1\/(x-5)通分(2x-11)\/(x-7)(x-4)=(2x-11)\/(x-6)(x-5)(2x-11)[1\/(x^2-11x+28)-1\/(x^2-11x+30)]=0因为x^2-11x+28不等于x^2-11x+30所以1\/(x^2-11x+2...
解方程:1\/(x-7)-1\/(x-5)=1\/(x-6)-1\/(x-4)
1\/(x-7)-1\/(x-5)=1\/(x-6)-1\/(x-4) 即(x-5)\/(x-7)(x-5)-(x-7)\/(x-5)(x-7)=(x-4)\/(x-6)(x-4)-(x-6)\/(x-4)(x-6)即2\/(x平方-12x+35)=2\/(x平方-10x+24)即x平方-12x+35=x平方-10x+24ji 2x=11所以 x =4.5...
解方程1\/(X—3)—1\/(X—4)=1\/(X—6)-1\/(X-7),根据解出的下面方程的解...
-1\/(x^2-10x+24)]=0 x^2-10x+21不等于x^2-10x+24 所以1\/(x^2-10x+21)-1\/(x^2-10x+24)不等于0 所以2x-10=0 x=5 经检验,x=5是方程的解 注意到分母分别是-3,-4,-6,-7 而解是x=5 所以1\/(x-2006)-1\/(x-2007)=1\/(x-2009)-1\/(x-2010)则x=2008 ...
(1\/x-6)-(1\/x-3)=(1\/x-5)-(1\/x-2)
原方程移项得:1\/(x-6) - 1\/(x-5)=1\/(x-3) - 1\/(x-2)左右两边分别通分得:[(x-5)-(x-6)]\/[(x-5)*(x-6)]=[(x-2)-(x-3)]\/[(x-3)*(x-2)]即:1\/[(x-5)*(x-6)]=1\/[(x-3)*(x-2)]则有:(x-5)*(x-6)=(x-3)*(x-2)即:x²-11x+30=x...
解方程:1\/(x-7)-1\/(x-5)=1\/(x-6)-1\/(x-4) 要写清楚
1\/(x-7)+1\/(x-4)=1\/(x-6)+1\/(x-5)通分 (2x-11)\/(x-7)(x-4)=(2x-11)\/(x-6)(x-5)(2x-11)[1\/(x^2-11x+28)-1\/(x^2-11x+30)]=0 因为x^2-11x+28不等于x^2-11x+30 所以1\/(x^2-11x+28)-1\/(x^2-11x+30)不等于0 所以所以2x-11=0 x=11\/2 分式方程要...