-3x^2+6x>2

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-3x^2+6x>2
-3x^2+6x>2

-3x^2+6x>2

x^2-2x<2/3
x^2-2x+1<5/3
(x-1)^2<5/3
开根号,x在±根号5/3+1之间

*-----------------------------------------------*| 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(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 6x-2x+3x-3x-x=1.2×3 多项式x^4+2x^3-4x^2-2x+3与x^3+4x^2+x-6的最大公因式是什么x^4+2x^3-4x^2-2x+3=(x^4+3x^3)-x(x^2+4x+3)+(x+3)=x^3(x+3)-x(x+1)(x+3)+(x+3)=(x+3)[x^3-x(x+1)+1]=(x+3)[x^3+1-x(x+1)]=(x+3)[(x+1)( (-x^4)^2-2(x^2)^3×x×x+(-3x)^3×x^5 45+(-x)方+6x(x+2)>(-x)(2x+3)+(-3x)方 解下列不等式:x²+28≥11x ;x²+x>1/4 ;-3x²+6x>2 (x+3x+5x...+2009x)-(2x+4x+6x+...+2010x) x/x-3-5x/x^2-x-6计算 求一个数独答案X X X 9 X X X 8 2 X 6 3 X X 1 4 X 99 X 8 X X X X X XX X X 6 7 X 3 X XX 4 6 X 5 X 2 9 XX X 7 X 2 3 X X XX X X X X X 7 X 17 X 4 3 X X 6 2 X6 3 X X X 7 X X X 化简:[√(x^2-6x+9)/x^2-x-12]*(x^3-16x)/(x^2-3x)-1/(x+3) {x>3} -3x^2+6x>2 数学3x+2>x-6 计算:x/x-2 - 5x/x²-x-6计算:x/x-3 - 5x/x²-x-6 3-2x<x-4,x/2-1<x/3+1/2,4-1/2x>3/2+x/3,6x-7<3-4x,求各题答案, -x²+2x-3>0 2x²-3x-2>0 x²<x+56 x+√x<6要详细点的怎样十字相乘 6-2x+3x-3x-x=1.2×3