(1/2-5)²=1/3(79-x)
(1) x-3/x-2 - x-5/x-4=x-7/x-6 - x-9/x-8
已知(x+1)(x²+2x+3)=x³+3x+5x+3,那么,将x³+3x²+5
解方程①(x+3/x-1)²-5(x+3/x-1)+6=0 ②x²-2/x+3-6x+18/x
(x/x-1)+(5x-2)/x*x-x=1 求x(有图)
解方程 5(x-3)(x+5)=x²+(2x-1)²
x(3x² -5x+1)-3x² (x-2)
已知若5x²-3x-5=0,求:(1)5x²-2x-1/(5x²-2x-5);(2)x
3X+(X+2)+(X+1)*(X-1)=4*(X²+8)
6/(x+1)=(x+5)/[x(x+1)] (3-x)/(x-4)+1/(4-x)=1 2/(1+x)-3/(1-x)
先化简再求值:(x+2/x²-2x - x-1/x²-4x+4)÷ x-4/x,其中x=3/2
(2x²-3x)²-5(2x²-3x)-6=0 3x/(x²-1)+x²
(x+4)(3x+6)=2x+4 (3x- 1)²+4x²=0 x²+5=2根号6x-1