2x^2-8x-9=5根号(x^2-4x-3)

(x+根号x)(x-根号x)+(2x+1)^2=4x-5 解方程(1/根号X(根号X+2))+(1/(根号X+2)(根号X+4))+...+(1/(根号X+8)(根号X+10))=5/24 代数式根号(x+1)-根号(16-2x)+根号(-x^2)+根号(4-5x)=? 2x^2-8x-9=5根号(x^2-4x-3) 3根号x/8-2x根号2/x+5/4根号x/50 5/2根号4x-6根号x/9+3x根号1/x 已知根号(3x+1)(2-x)=根号3x+1*根号2-x化简|x-4|+根号9x^2+6x+1+|x-2| 化简2／3x•根号9x-x^2•根号1／x^3+6x•根号x／4,x=5 (根号x-1)+(根号2x-3)+(根号3x-5)+(根号4x-7)=5x-6 x+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少? 根号9x+6x根号x分之4-2x根号x分之1 函数f(x)=根号下x^2+2x+5+根号下x^2-4x+8的最小值 根号x^2+4x-1=根号x-3 *-----------------------------------------------*| 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 || 3根号（x^2-9)-4根号（x^2-16)-5根号（x^2-25)=120/x 根号25x/4+根号16x-根号9x-根号x/2 x^4-4x+4/2x-4乘以(x-2) 其中x=根号5 x^2-9/x^2+6x+9乘以3x^3+9x^2/x^2-3x 其中x=-1/3 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