x^2-|x|-6＞0

x^2-|x|-6＞0 x^2-|x|-6＞0 设偶函数f(x)满足f(x)=2ˆx-4(x≥0),则{x|f(x-2)>0}=1.{x|x〈-2或x〉4}2.{x|x〈0或X＞4}3.{x|x＜0或x＞6}4.{x|x＜-2或x＞2} *-----------------------------------------------*| 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 || X/2+x/6+X/12+.+x/9900＞99 x(x*x-6x-9)-x(x*x-8x-15)+2x(3-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 x(x+2)(x+6)+20x+6=0 (x^-2x)^-5(x^-2x)-6=0 (x+2)(x-3)(x-6)(x-1)=0 6/(x-1)-(x+2)/x(x-1)=0 (x-2)(x-3)/(x+5)(x-7)＞0(x-2)(x-3)(x+2)(x+3)＞0 已知1+x+x^2+x^3=0,求x+x^2+x^3+x^4+x^+x^6+x^7+x^8的值 如果1+x+x^2+x^3=0,求x+x^2+X^3+x^4+x^5+x^6+x^7+x^8的值, 1/(x*x-2x-3)+2/(x*-x-6)+3/(x*x+3x+2)=0 45+(-x)方+6x(x+2)＞(-x)(2x+3)+(-3x)方 不等式|(x+3)/x|>(x+3)/x,不等式（x²-9）/(x-2)＞0 5(x的2次方+X-3)-4x(6+x)+x(-x+4)=0