3-X/X-2÷(X+2-(5/X-2)) 化简
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3-X/X-2÷(X+2-(5/X-2)) 化简
X-2分之3-X除以(X+2- X-2分之5)
X-2分之3-X除以(X+2- X-2分之5)
3-x/(x-2)÷(xx-4-5)/(x-2)=3-x/(x-2)÷(x+3)(x-3)/(x-2)=3-x/(x+3)(x-3)=(3xx-27-x)/(x+3)(x-3)
化简 x(x-1)+2x(x+1)-3x(2x-5)
(x+2/x+1)-(x+4/x+3)-(x+3/x+2)+(x+5/x+4)
计算(x*x+4x+5)/(x+2)-(x*x+6x+10)/(x+3)+1
解方程(x-2)X(x的平方-6x-9)=x(x-5)X(x-3)
(1) x-3/x-2 - x-5/x-4=x-7/x-6 - x-9/x-8
x(x平方-1)+2X平方(X+1)-3X(2X-5)帮个忙
(x/x-1)+(5x-2)/x*x-x=1 求x(有图)
化简(-2x^2)+3x+2)-3(7x^2-5x-1)-(4x^2-x+6)
3x²-【5x²+(3x²-2x)-(2x²-4x)】 化简
化简 (x+y)(x²-xy+y²) ; 3(2x-1)(x+6)-5(x-3)(x+6)
初一数学x*x+2x+5的值为7,请求3x*x+6x+3的值.因为x*x+2x2x+3=3x(x*x+2x)+2x+2x
化简:[(x+2)/(x^2-4)-(2x-5)/(x-4x+4)]÷[(x-3)/(x-2)]