1题:5/x-1=1/x+3 2题:1-x/2-x减3/x-2=2 3题:2/x+1减1/x-1=4x/x²-1 4题:2/x+3加3/2=7/2x+6

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*-----------------------------------------------*| 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 请大神帮我解这个数独 题,我解了很久 了 ,最后 X X X X 3 X 1 5 XX X X X 7 8 6 X 92 9 X X X X X X 7X X X X 6 X 2 X 3X 1 3 7 2 9 4 8 X4 X 2 X 8 X X X X3 X X X X X X 6 48 X 6 3 9 X X X X X 7 1 X 4 X X 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 x+2/x+1-x+4/x+3=x+6/x+5-x+8/x+7 x=? |x-1|+|x-2|+|x-3|+|x-4|+|x-5|+|x-6|+|x-7|+|x-8|+|x-9|+|x-10|的最小值 这类题该怎入手 写过程x(x-1)+2x(x+1)-3x(2x-5)-x(3x-2)+2x(2-x)=-5x(x-2)-4 一道初中分式题纠错小明在做题目:x+2/x+1-x+4/x+3=x+6/x+5-x+8/x+7时进行如下变形: (x+2)/(x+1)-(x+4)/(x+3)=(x+6)/(x+5)-(x+8)/(x+7) 即 (x+2)/(x+1)+(x+8)/(x+7)=(x+4)/(x+3)+(x+6)/(x+5) ∴经通分,合并同类项可得: 下面九宫格 第1题X X 1 X X X X 2 X 5 X 9 2 X 7 X 3 8 7 4 X 1 X X X 6 X 9 1 X 5 X 2 8 7 6 2 5 4 X X 6 X 1 X 6 X 3 X X 4 X X X 4 9 8 3 6 5 X 8 1 1 3 X X 2 8 X 9 7 8 2 5 7 X X 6 4 3 第2题X X X X X X X X X 2 1 X X X X 9 X X X X X 4 7 X X X X X 5 几道多项式乘法题(x+2)(x+4)-x(x+1)-83(x-2)(x+1)-2(x-5)(x-3)x(x的平方-4)-(x+3)(x的平方-3x+2)先化简,再求值:(3x+2)(2x-3)-(2x-5)(3x-1),其中x=1/2. x+2/x+1-x+3/x+2-x+4/x+3+x+5/x+4 分式方程的题 (1)x/x+1=(1/x)+1 (2)2/x-3=(1-x/3-x)-5 (3)(x^2-4x/x^2-1)+1=2x/x+1 x^5-x^4+x^3-x^2+x-1 (X+1)X(X+2)X(X+3)=504 两题填空题.x+y=-3,则5-2x-2y=_________.观察下列各式:(x-1)(x+1)=x^2-1,(x-1)(x^2+x+1)=x^3-1,(x-1)(x^3+x^2+x+1)…根据前面的各式规律可得(x-1)(x^n-x^n-1+…+x+1)=_______.