1 3(x+3)
[x(x+1)+x平方(x-1)]+(-3x)
(x-1)^3(x+1)(x-2)/(x+4)
(x+1)(x+2)(x+3)(x+4)+1
计算 x(x+3)-(x-1)(x-2)
(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
(1) x-3/x-2 - x-5/x-4=x-7/x-6 - x-9/x-8
先化简分式[(3x/x-1)-(x/1+x)]/(x/1-x²)
化简 x(x-1)+2x(x+1)-3x(2x-5)
先化简分式(3x/x-1-x/x-1)除x/x平方-1
3/x-1=4/x 6/x+1=x+5/x(x+1)
化简 (3x/x-1 -x/x+1)÷x/x²-1