2x÷5咋算
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2x÷5咋算
(-x)^5÷x^2
化简:2|x| -3x÷|2x-|5x||
*-----------------------------------------------*| 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 ||
过程(x+2)(x+3)-(x-4)(x-5),其中x=2.咋算?
(x^-3x+2/x^-5x+6)^2÷(x-1/x^2-2x-3)^2
化简:[(x+2)/(x^2-4)-(2x-5)/(x-4x+4)]÷[(x-3)/(x-2)]
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.(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}
化简:〔(x^2+18x+72)÷(x+12)-(x^2+5x-6)÷(x-1)〕·(x^3-2x^2-x+1)
16-x^2/x^2-2x-3÷1^2-5x+4/x-3
计算:(1)/(x-3)÷(x+2)/(x^2-9)-(1)/(x^2+5x+6)
8x^2-4x/x^2-x-6÷(x-3/x+2-x+2/x-3),其中x=5
化简:x^2-5x+6/x^2-1÷x-3/x+1
(-x^2n-2)*(-x)^5÷[x^n+1*x^n*(-x)]=?
x^2-10x+25/x-1÷x^2-1/5-x
(-x^2n-2)(-x)^5÷[x^n+1·x^n`(-x)]
(16x^4-5x³+3x²-6x)÷(-2x)