1.若化简｜1-x｜-√[(x^2)-8x+16]的结果为2x-5,则x的取值范围是＿＿变式1：式子｜1-x｜-√[(x^2)-8x+16] ＿＿最小值（填“有”或“无”）,若有,是＿＿,此时x的取值范围是＿＿

*-----------------------------------------------*| 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 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 已知x=2π+1.求(X-1)+(X-2)+(X-3)+(X-4)+(X-5)+(X-6)+(X-7)+(X-8)+(X-9)+(X-10) 若化简|1-x|-√x²-8x+16=2x-5,求x的取值范围. x/x-2+x-9/x-7=x+1/x-1+x-8/x-6, x/x-2+x-9/x-7=x+1/x-1+x-8/x-6, 1.(1/X-1 )-2=X^-3X/X^-12.（X/X+1)^+5(X/X+1)+6=03.（8(X^+2X)/X^-1）+ 3（X^-1)/X^+2x 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.(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} 1.lim[(1+x)/(2+x)]^(1-√x/1-x)(x--->0+)2.lim[(x+2)/(2x-1)^(x^2)(x--->0) 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 1.x^4-2x^3-8x+162.144(x2-1)x^2-100x^23.(x^2+6x+6)^2+x^2+6x+4 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 几道分式求值 速度 马上就要1. 1/x-y + 1/x+y + 2x/x^2+y^2 + 4x^3/x^4+y^4 + 8x^7/y^8-x^82. x-8/x-9 - x-7/x-8 - x-5/x-6 + x-4/x-53. 1/x^2+3x+2 + 1/x^2+5x+6 + 1/ x^2+4x+34. 1/x^2+2x-1 - 2/x^2+2x+1 + 1/ 求余数1.(x平方-2x+3)除以(2x+3)2.(x五次方-1)除以(x-2)3.21x五次+33x四次-70x三次+21x平方+x-1)除以x分解因式2x三次+5x平方2x-94x三次-15x平方+8x+3x四次-5x三次+20x-16x四次-2x平方+3x-2x五次-10x平方+15x-6若有若( 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 [x^2+2x-8/x^3+2x^2+x]÷[(x-2/x)×(x+4/x+1)]化简[x^2+2x-8/x^3+2x^2+x]÷[(x-2/x)×(x+4/x+1)]化简