(1)x²+4x-3=0 (2)x²+2x-1=0 (3)x²-6x+1=0 (4)x
x^4+x^3+x^2+x+1=0,x^2006+x^2005+x^2004+x^2003+x^2002
已知1+x+x^2+x^3=0,求x+x^2+x^3+x^4+x^5+x^6+x^7+x^8的值
已知1+x+x^2+x^3=0,求x+x^2+x^3+x^4+x^+x^6+x^7+x^8的值
已知f(x)={x²-3x+4(x>0),{1-x(x
x²+3x-2=0,x²-6x-6=0,3x²-4x-1=0,3x²+10x+3
3x²-(x-2)=0 (2x-1)(x+3)=4 x²-3x-4=0 x²-3x+18=
2x(x-1)=0 x²+4=4x (x-3)(x+1)=0 x²-3x+1=0
(x-2)²=(2x-3)² x²-4x=0 3x(x+1)=3x+3 x²-2
x^5+x^4 = (x^3-x)(x^2+x+1)+x^2+x
(X-1)(X-2)=70,(3-X)²+2X(X-1)=0,-3X²-4X+4=0,(3-X)
解方程:x(6-x)-2x(x+1)-(x^3-3x^4)/x²=4
x²+3x-1=0,1/(x-2)×(x²-4x+4)/(x+1)-(x-1)/(x+2)