解方程:x+2\/x+1-x+3\/x+2=x+6\/x+5-x+7\/x+6
解:通分化简得到 (x+1)(x+2)=(x+5)(x+6)3x+2=11x+30 8x=-28 x=-7\/2
(x+2\/x+1)-(x+3\/x+2)=(x+4\/x+3)-(x+5\/x+4)解方程
解: (1)计算 (x+1)(x+2)=x2+3x+2 (x-1)(x-2)=x2-3x+2 (x-1)(x+2)=x2+x-2 (x+1)(x-2)=x2-x+2 (2)特征:计算出的结果二次项x2的序数为1,常数项为常数之积,一次项x的序数为常数之和,用公式表示如下: (x+a)(x+b)=x2+(a+b)x+ab (3)(x+a)(...
解方程 x+1分之x+2-x+2分之x+3=x+3分之x+4-x+4分之x+5
右边=1+1\/(x+3)-1-1\/(x+4)=1\/(x+3)-1\/(x+4)=1\/(x+3)(x+4)1\/(x+1)(x+2)=1\/(x+3)(x+4)即(x+1)(x+2)=(x+3)(x+4)x^2+3x+2=x^2+7x+12 -10=4x x=-5\/2
解方程x+1\/x+2+x+4\/+x5=x+2\/x+3+x+3\/x+4
所以 原方程可化为:2-1\/(x+2)-1\/(x+5)=2-1\/(x+4)-1\/(x+3)===>1\/(x+2)+1\/(x+5)=1\/(x+4)+1\/(x+3)===> (2x+7)\/[(x+2)(x+5)]=(2x+7)\/[(x+3)(x+4)]===>2x+7=0 (1) 或 (x+2)(x+5)=(x+3)(x+4) (2)由 (1)解得 x= -...
解分式方程: (1)x+1分之x+2 -x+2分之x+3=x+3分之x+4 -x+4分之x+5...
2x²+12x)(x²+5x)+17(x²+5x)+4(2x²+12x)+68 2(2x²+12x)-4(x²+5x)=-10 4x²+24x-4x²-20x=-10 4x=-10 x=-2.5 2x-4分之3 -x-2分之x =2分之1 3\/2(x-2)-x\/(x-2)=1\/2 3-2x=x-2 -3x=-5 x=5\/3 ...
解方程数学问题x+1\/x+2+x+2\/x+3=x+3\/x+4+x+4\/x+5
解:1-1\/﹙x+2﹚+1-1\/﹙x+3﹚=1-1\/﹙x+4﹚+1-1\/﹙x+5﹚1\/﹙x+2﹚+1\/﹙x+3﹚=1\/﹙x+4﹚+1\/﹙x+5﹚1\/﹙x+2﹚-1\/﹙x+4﹚=1\/﹙x+5﹚-1\/﹙x+3﹚2\/﹙x²+6x+8﹚=﹣2\/﹙x²+8x+15﹚x²+8x+15=﹣x²-6x-...
x+2\/1-x+3\/1=x+4\/1-x+5\/1怎么解 急
1\/(x+2)-1\/(x+3)=1\/(x+4)-1\/(x+5)[(x+3)-(x+2)]\/(x+3)(x+2)=[(x+5)-(x+4)]\/(x+5)(x+4)1\/(x^2+5x+6)=1\/(x^2+9x+20)x^2+5x+6=x^2+9x+20 4x=-14 x=-7\/2 经检验x=-7\/2是原方程的解 ...
方程:x+1分之x+2-x+3分之x+4=x+5分之x+6-x+7分之x+8
解:(x+2)\/(x+1) -(x+4)\/(x+3)=(x+6)\/(x+5) -(x+8)\/(x+7)1 +1\/(x+1) -[1+ 1\/(x+3)]=1 +1\/(x+5)-[1+1\/(x+7)]1\/(x+1) -1\/(x+3)=1\/(x+5)-1\/(x+7)1\/(x+1) +1\/(x+7)=1\/(x+3)+ 1\/(x+5)(x+7+x+1)\/[(x+1)(x+7)]=(x+...
解方程:x+2\/x+1一x+4\/x+3=x+6\/x+5一x+8\/x+7
解方程:x+2\/x+1一x+4\/x+3=x+6\/x+5一x+8\/x+7 我来答 1个回答 #热议# 该不该让孩子很早学习人情世故?匿名用户 2014-04-10 展开全部 更多追问追答 追问 不清楚 追答 已赞过 已踩过< 你对这个回答的评价是? 评论 收起
解方程x+2分之x+1-x+3分之x+2=x+6分之x+5-x+7分之x+6
解:通分,得到 (x+2)(x+3)=(x+6)(x+7)5x+6=13x+42 8x=-36 x=-9\/2