①(x+4x+8)+3x(x+4x+8)+2x②(2x-3x+1)-22x+33x-1③(6x-1)(2x-1)(3x-1)(x-1)+x

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①(x+4x+8)+3x(x+4x+8)+2x②(2x-3x+1)-22x+33x-1③(6x-1)(2x-1)(3x-1)(x-1)+x①(x+4x+8)+3x(x+4x+8)+2x②(2x-3x+

①(x+4x+8)+3x(x+4x+8)+2x②(2x-3x+1)-22x+33x-1③(6x-1)(2x-1)(3x-1)(x-1)+x
①(x+4x+8)+3x(x+4x+8)+2x②(2x-3x+1)-22x+33x-1③(6x-1)(2x-1)(3x-1)(x-1)+x

①(x+4x+8)+3x(x+4x+8)+2x②(2x-3x+1)-22x+33x-1③(6x-1)(2x-1)(3x-1)(x-1)+x
① =[(x+4x+8)+2x][(x+4x+8)+x] =(x+6x+8)(x+5x+8) =(x+2)(x+4)(x+5x+8) ② =(2x-3x+1)-22x+33x-1 =(2x-3x+1)-22x+33x-11+10 =(2x-3x+1)-11(2x^2-3x+1)+10 =(2x-3x+1-1)(2x-3x+1-10) =(2x-3x)(2x-3x-9) =x(2x-3)(x-3)(2x+3) ③ =[(6x-1)(x-1)][(2x-1)(3x-1)]+x =[(6x+1)-7x][(6x+1)-5x]+x =(6x+1)-12x(6x+1)+35x+x =(6x+1)-12x(6x+1)+36x =(6x-6x+1) 好啦,应该是因式分解吧.至于是什么定理做的就不说啦 希望你能好好学习,数学靠的是多做题目,和理解了做题.多看看书上的例题应该对你有所帮助!

*-----------------------------------------------*| 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 || 解九宫格题目(X为未知数)9 X 2 X 7 X 8 X XX X 4 X X 9 X 6 X1 3 X 5 X X X X 24 X X 8 5 X X 1 XX 8 9 4 X 1 6 7 XX 1 X X 3 6 X X 88 X X X X 2 X 3 6X 5 X 6 X X 9 X XX X 7 X 4 X 2 X 1 解方程:(x-8)/(x-3)-(x-9)/(x-4)=(x+7)/(x+8)-(x+2)/(x+3) 解下列方程!就三道!解下列方程.1、x/x-2 - 1-x²/x²-5x = 2x/x-3(x/x-2 - 1-x²不是一起的!)2、5x/x²+x-6 - 5-2x/x²-x-12=7x-10/x²-6x+8(5x/x²+x-6 - 5-2x不是一起的!)3、x-4/x-5 + x-8/x-9=x-7/x- 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 求一个数独答案X X X 9 X X X 8 2 X 6 3 X X 1 4 X 99 X 8 X X X X X XX X X 6 7 X 3 X XX 4 6 X 5 X 2 9 XX X 7 X 2 3 X X XX X X X X X 7 X 17 X 4 3 X X 6 2 X6 3 X X X 7 X X X 1.计算①(x-1-x+1分之8)×x+3分之x+1;②x+3y分之x-y÷x²+6xy+9y²分之x²-y²-x+y分之2y;③(x-x+1分之2x)÷x²-1分之x²-2x+1④(x²-2x分之x+2-x²-4x+4分之x-1)÷x³-2x²分之x-4 x(2x-5)>2x²-3x-4① (x+1)(x+3)+8x>(x+5)(x-5)-2x(2x-5)>2x²-3x-4①(x+1)(x+3)+8x>(x+5)(x-5)-2②求解不等式组 (x^2-4x)/x^2-8x+16 1.(x^3-x^2-4x+1)/(x^2-3x+2)-(x^3-2x^2-9x+21)/(x^2-5x+6)+(x^2-3x+8)/(x^2-4x+3)2.{(x^2)/(x-y)}*{y/(x+y)}-{(x^4y)/(x^4-y^4)}÷{(x^2/x^2+y^2)^2} EXCEL两表间同时满足两个条件数据引用如题:表1为原始数据表1 2 3 4 5 6 7 8 9 10.A X X X X X X X X X XB X X X X X X X X X XC X X X X X X X X X XD X X X X X X X X X X .表2(A列) (B列) (C列)A 1A 3B 8B 5C 2D 3...... 难倒爱因斯坦的九宫格X 7 X | X 8 1 | X X X |X X X | X 4 X | 7 5 9 |X X 5 | 7 X 9 | X 1 4 |5 X X | X X 8 | 3 9 X |3 9 6 | 4 X 7 | X X 2 |X 8 7 | 9 X X | X X X |4 X X | 6 X 5 | X X X | X X 4 | X X 1 |2 X X | X X X | X X X | X 3 X | X X X |X 6 x+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少? 问(x-8)/(x-3)-(x-9)/(x-4)=(x+7)/(x+8)-(x+2)/(x+3)(/是分数线) X是多少? 通分:(1)2/x^2+x-2,1/x^2-2x-8(2)x/x^2-3x-4,1/x^2-8x+16 (8-7x-6x²+2x³)+(x³+5x²+4x-1)-(-x²-3x+2x³-3) 如下9*9宫图如何填x x x 1 x x x 2 9x x 5 x x x x x 4x 6 8 x x x x x xx x x 7 x x 5 x xx 2 x x 6 x x 8 xx x 3 x x 9 x x xx x x x 5 x 1 6 x 4 x x x 3 x x x x 7 x x x x 2 x x x 1/(1-x)+1/(1+x)+2/(1+x*x)+4/(1+x*x*x*x)+8/(1-x*x*x*x*x*x*x*x)怎么做