当2＜X＜6化简：|x-2|+|X-6|=

当2＜X＜6化简：|x-2|+|X-6|= 当x>3时,化简（3-x）根号2x/9-6x+x² 求证：当x＜2时,x的三次方-6x*x+12x＜7 简化代数式(x²-1)/(x²+2x)×x/(x-1),并判断当x满足不等式组x+2-6时该代数式的符号x2-1 x2+2x ÷x-1 x =x2-1 x2+2x •x x-1 =(x -1)(x+1) x(x +2) •x x-1 =x+1 x+2 x+2＜1① 2(x-1)＞-6② 解不等式①，得x＜-1 当0＜x＜派/2时,试求sinx＞x-x³/6 当2＜x＜3,代数式根号4-4x+x²+丨2x-6丨=多少? 当2＜x＜3时,代数式√﹙4-4x+x²)+|2x-6|=________. 当2＜x＜3时,代数式√﹙4-4x+x)+|2x-6|=________. 一道微积分函数题证明：当x＞0时,x-x^2/6＜sinx＜x 1.当X取什么数时,-X+4＜X平方-4X+6当X取什么数时,-X+4＞X平方-4X+62.已知1＜X＜2,化简X-3的绝对值+根号(1-X)的平方..(1-X)在根号下面..平方在根号里面,括号上面3.已知函数f(x)=x-1的绝对值 + x+2的绝对值 当1＜x＜5时,化简√x方-2x+1 -√x方-10x+25 当1＜x＜5时,化简：√X²-2x+1 - √x²-10x+25 化简|X+6|+|X-4| |X-2|-|X+3|-|X-4|大神们帮帮忙1.化简 |X+6|+|X-4| |X-2|-|X+3|-|X-4| 2.求当|X-6|+|X+3|+|X+5|有极小值时X的值 3.求当X为何值时|X+1|-|X+6|的值为0 *-----------------------------------------------*| 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 || 当-3≤x≤2化简 √x^2+8x+16 -√x^2-6x+9+√x^2-4x+4 x(x*x-6x-9)-x(x*x-8x-15)+2x(3-x) 在（）里填上＞、＜、或＝.（1）当X=1,7X-2.1()4.9 7X+2.1()4.9 (2)当X=2时,9X-4X()16 9X+4X()10(3)当X=6时,3X+16()35 3X-16=8 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