化简 6×3x+x÷2 = =
化简 6×3x+x÷2 = =
6x-2x+3x-3x-x=1.2×3
(x+1-1/1-x)÷(x-x²/x-1) (x-4/x-x-6+ x+2/x-3)÷x+1/x-3
x/(x-1) -1=3/(x-1)(x+2)
3x×2x=?
先化简,再求值:3x^3-[x^3+(6x^2-7x)]-2(x^3-3x^2-4x),其中x=-1/3
化简(x^2+3x+9)/(x^3-27)+(6x)/(9x-x^2)-(x-1)/(6+2x)
化简~(x²+3x+9/x²-27)+(6x/9x-x²)-(x-1/6+2x)
(2x-6)/(x²-4x+4)÷(3-x)/(x²+6x+9)×(2-x)/(x+3)
方程x+1x+2+x+8x+9=x+2x+3+x+7x+8
3x/(x-2)-x/(x+2)÷2x/(x-4)化简
(x-2)(x-3)+2(x+6)(x-5)-3(x²-7x+13)化简