5×(x+2)=6×(x-1)
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
(x/x-1)+(5x-2)/x*x-x=1 求x(有图)
函数f(x)=1/x∧2+5x+6展开(x+1)
用因式分解法 3x(5x+1)=10x+2 6x²+3x-17/2=2x²+3x+½
6/(x+1)=(x+5)/[x(x+1)] (3-x)/(x-4)+1/(4-x)=1 2/(1+x)-3/(1-x)
5x-3(2x+1)=6x-4(5-3x)求x
(x+2/x+1)-(x+4/x+3)-(x+3/x+2)+(x+5/x+4)
解方程(x-2)X(x的平方-6x-9)=x(x-5)X(x-3)
X-(X/2)+(X/3)-(X/4)+(X/5)-(X/6)=1
化简(-2x^2)+3x+2)-3(7x^2-5x-1)-(4x^2-x+6)
求函数Y=(X·X-2X-1)/(X·X-5X-6)的值域?