x4+2x3+x2+1+2(x+x2)因式分解,在线等!~T_T~
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x4+2x3+x2+1+2(x+x2)因式分解,在线等!~T_T~x4+2x3+x2+1+2(x+x2)因式分解,在线等!~T_T~x4+2x3+x2+1+2(x+x2)因式分解,在线等!~T_T~x
x4+2x3+x2+1+2(x+x2)因式分解,在线等!~T_T~
x4+2x3+x2+1+2(x+x2)
因式分解,在线等!~T_T~
x4+2x3+x2+1+2(x+x2)因式分解,在线等!~T_T~
x4+2x3+x2+1+2(x+x2)
=x4+2x3+3x2+1+2x
=x4+2x3+2x2+x2+1+2x
=x2(x2+2x+1)+(X+1)2+x2
=x2(x+1)2+(x+1)2+x2
因式分解:x4+x3+2x2 +x+1
x4+2x3+x2+1+2(x+x2)因式分解
因式分解x4+x3+2x2-x+3
分解因式:-27x3+8 ,(x2-5x+2)(x2-5x+4)-24 ,x5+x4+x3+x2+x1+1
线性代数!解非其次线性方程组;【2x1+x2-x3+x4=1;4x1+2x2-2x3+x4=2;2x1+x-x3-x4=1】.
X3-X2+X-1分之X4+X3-2乘以x3+2x2+2x+2除以-2分之X3-X-X2+1化简
已知x2+x+1=0,求x4+2x3-x2-2x+2014
X2+X+1=0 X4+2X3+4X2+3X+2=?
已知x2-3x+1=0,求x4-6x3+4x2+15x+2
(2x4-5x2-4x+1)-(3x3-5x2-3x)
(1)x4-12x+323(2)x4+7x3+14x2+7x+1
x4+2x3+x2+1+2(x+x2)因式分解,在线等!~T_T~
3-X2+X-1分之X4+X3-2乘以x3+2x2+2x+2分之X四次方-1除以-2分之X3-X-X2+1化简
用基础解系表示线性方程组的全部解(1)【2x1-x2+x3-2x4=1 】(2) 【x1-2x2+x3=-5】 (3) 【x1-x2-x3+x4=0】【-x1+x2+2x3+x4=0 】 【x1+5x2-7x3=2】 【x1-x2+x3-3x4=1】【x1-x2-2x3+2x4=-0.5 】 【3x1+x2-5x3=-8】 【x1-x2-2x
x5-x4+x3-x2+x-1因式分解
X5-X4+X3+X2+X+1因式分解
用克拉默法则解下列方程组 x1-2x2+3x3-4x4=4 x2-x3+x4=-3 x1+3x2+2x4=1 -7x2+3x3+x4=3x1-2x2+3x3-4x4=4x2-x3+x4=-3 x1+3x2+2x4=1 -7x2+3x3+x4=3
求出不等式解集1+x-x3-x4>0 x3-2x2+3