5x-3x^2-2>0
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5x-3x^2-2>0
5x-3x^2-2>0
5x-3x^2-2>0
(x-2)(x-3)/(x+5)(x-7)>0(x-2)(x-3)(x+2)(x+3)>0
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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
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5(x的2次方+X-3)-4x(6+x)+x(-x+4)=0
两道有关符号问题题目|x=2|+|x-3| x+2=0 x=-2 x-3=0 x=3x<-2-x-2-x-3=-2x=1x>3x+2+x-3=2x-1-2≤x≤3x=2-x+3=5|x-1|+|x+1| x-1=0 x=1 x+1=0 x=-1 x≤-1-x+1-x+1=2-2xx>1x-1+x+1=2x-1<x≤11-x+x+1=2两道题目都是零点
x+2/x+1-x+3/x+2-x+4/x+3+x+5/x+4
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x^5-x^4+x^3-x^2+x-1
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已知实数x满足5x*x-3x-5=0,求代数式5x*x-2x-[1/5x*x-2x-5]的值.
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计算:x/x-2 - 5x/x²-x-6计算:x/x-3 - 5x/x²-x-6