因式分解 x5n+xn+1 2a2-a2b+(b-2)(ab-a)2 x5+x4+x3+x2+x+1 x4+y4-2x2

来源：学生作业帮编辑：大师作文网作业帮分类：数学作业时间：2024/11/10 16:13:09

因式分解 x5n+xn+1 2a2-a2b+(b-2)(ab-a)2 x5+x4+x3+x2+x+1 x4+y4-2x2y2-2x2-2y2+1

x^5n+x^n+1
=x^5n+x^4n+x^3n-x^4n-x^3n-x^2n+x^2n+x^n+1
=x^3n(x^2n+x^n+1)-x^2n(x^2n+x^n+1)+(x^2n+x^n+1)
=(x^2n+x^n+1)(x^3n-x^2n+1)
2a^2-a^2b+(b-2)(ab-a)^2
=(b-2)(ab-a)^2-a^2b+2a^2
=(b-2)(ab-a)^2-a^2(b-2)
=(b-2)[(ab-a)^2-a^2]
=(b-2)(ab-a+a)(ab-a-a)
=(b-2)(ab)(ab-2a)
=a(b-2)(ab)(b-2)
=ba^2*(b-2)^2
x5+x4+x3+x2+x+1
=(x5+x4)+(x3+x2)+(x+1)
=x^4(x+1)+x^2(x+1)+(x+1)
=(x+1)(x^4+x^2+1)
x^4+y^4-2x^2y^2-2x^2-2y^2+1
=x^4-2x^2y^2+y^4-2x^2-2y^2+1
=(x^2-y^2)^2-2(x^2-y^2)+1
=(x^2-y^2-1)^2

因式分解 x5n+xn+1 2a2-a2b+(b-2)(ab-a)2 x5+x4+x3+x2+x+1 x4+y4-2x2 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+x2-2ax-a2+1 解方程组X2+X3+X4=1 X1+X2+X3=5 X3+X4+X5=-5 X4+X5+X1=-3 X5+X1+X2=2 1分解因式：2x4-x3-13x2-15=?2.分解因式：x5+x4+x3+x2+x+1=?3分解因式：x4-4x2+6 求齐次线性方程组x1+2x2+x3+x4+x5=1 2x1+4x2+3x3+x4+x5=2 -x1-2x2+x3+3x4 x8+x7+x6+x5+x4+x3+x2+x+1因式分解分解因式：-27x3+8 ,(x2-5x+2)(x2-5x+4)-24 ,x5+x4+x3+x2+x1+1 已知数据X1,X2,X3,X4,X5的平均数是X拔,则一组新数据X1+1,X2+2,X3+3,X4+4,X5+5的平均数一道简便计算数学题1X2+2X3+3X4+4X5...+n(n+1)一1X2+2X3+3X4+4X5...+2013X2 简单线代题///X1+X2+X3+X4+X5=13X1+2X2+X3+X4+3X5=0 X2+2X3+2X4+6X5=3