化简：|x+5|+|x-7|

|x+5|+|x-7|+|x+10|化简 化简：|x+5|+|x-7|+|x+10| *-----------------------------------------------*| 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 || 化简：|x+5|+|x-7| 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 用递归法求y=x-(x*x*x/3!)+(x*x*x*x*x/5!)-(x*x*x*x*x*x*x/7!)+. 化简：9x-12x+5x,3x-5x-2+5x+8,3x+5+2x+3-7-11x 化简:3x(x的平方+2x+7)-(x的平方+7)(3x-5) 化简：3x(5x^2-2)-x^2(4x+3)+8(7x+1) （x+3)(x-7)-(x-4)(X-5)=10x+9 化简,求值 8x-［-3x-（2x-7x-5）+3］+4x化简 已知{1-7x>3-5x,-3x>6,化简|x|-|x+1|. 8x²-【-3x-(2x²-7x-5)+3】+4x化简 化简sin(x)(cos(x)+cos(3x)+cos(5x)+cos(7x)) 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 化简|5x+7|-|3x-7|-|7x+3| 化简：|x+5|+|x－7|+|x+10| 5＜x＜7 化简｜x-4｜+｜x-8｜