-(10x-12)(x+5)是=(-10x+12)(x+5)or =(10x-12)(-x-5)
解方程.(5x/x²+x-6)+(2x-5/x²-x-12)=7x-10/x²-6x+8
(x+12)(x-2)+(x+7)(x+8)-(x+5)(x-10),其中x=2
(2x-2)(x-1)=0 x(x-5)=5x-10
(x/x-1)+(5x-2)/x*x-x=1 求x(有图)
计算(x*x+4x+5)/(x+2)-(x*x+6x+10)/(x+3)+1
x-x/5=2.4 (求未知数x) 12÷5%x=8 4x+x=12.5
1)x+1/x=3,求x^10+x^5+1/x^5+1/x^10的值
(x-6)/(x-5)-(x-7)/(x-6)=(x-9)/(x-8)-(x-10)/(x-9)
计算:1/(x^2-7x+10)+1/(x^2-x-2)+1/(x^2+5x+4)+1/(x^2+11x+28)=( )
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
3/x-1=4/x 6/x+1=x+5/x(x+1)