(x+1)(x-1)(x2+1)(x4+1)

已知x2+x+1=0 求x4+1/x4 已知x2-x-1=0,求x4+1/x4 x2-3x+1=0 x2/(x4-x2+1) x+1/x=3,求x2/x4+x2+1 x5-x4+x3-x2+x-1因式分解 X5-X4+X3+X2+X+1因式分解 因式分解：x4+x3+2x2 +x+1 若X2+1除以X=5,求X4+X2+1除以X4-X2+1 若X2+1除以X=5,求X4+X2+1除以X4-X2+1 x+1/x=2 求x2+1/x2 x4+1/x4 的值x2+1/x2 x4+1/x4 2和4是平方。 已知x+1/x=3 求x2+1/x2和1/x4+x4 x2-5x+1=0,求x4+1/x2 x4+2x3+x2+1+2(x+x2)因式分解 若X2-3X+1 求x+1/x和x2+1/x2以及x4+1/x4的值若X2-3X+1=0 求x+1/x和x2+1/x2以及x4+1/x4的值 计算(x-1)(x+1)(x2+1)(x4+1) (x+1)(x-1)(x2+1)(x4+1) (1+x)(1-x)(1+x2)(1+x4)怎么算, 若x不等于0,求 {根号(1+x2+x4)-根号（1+x4）}/x的最大值