(x+7)(x-6)-(x-2)(x+1)
(1) x-3/x-2 - x-5/x-4=x-7/x-6 - x-9/x-8
计算(x*x+4x+5)/(x+2)-(x*x+6x+10)/(x+3)+1
(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)
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
解方程 X除以(X-2) + (X-9)除以(X-7) = (X+1)除以(X-1) +(X-8)除以(X-6)
(1/x²+x)+(1/x²+3x+2)+(1/x²+5x+6)+(x²+7x+
x+2分之x+1+(x+7分之x+6)-x+3分之x+2-(x+6分之x+5)和几道题帮忙算一下
(1)6+2(x-3)=X (2)8-2(x-7)=x-(x-4) (3)2x-(1.5x-1)=2(1.5x-1)
x+1分之x+2减去x+3分之x+4=x+5分之x+6减去X+7分之x+8 (解方程)
[x(x+1)+x平方(x-1)]+(-3x)
(x-1)^3(x+1)(x-2)/(x+4)