(x4-4x2+1)(x4+3x2+1)+10x4分解因式
答案:2 悬赏:60 手机版
解决时间 2021-02-10 17:25
- 提问者网友:战皆罪
- 2021-02-10 14:17
(x4-4x2+1)(x4+3x2+1)+10x4分解因式
最佳答案
- 五星知识达人网友:白昼之月
- 2021-02-10 15:31
解:原式=(x^4-4x²+1)(x^4+3x²+1)+10x^4
=x^8+3x^6+x^4-4x^6-12x^4-4x²+x^4+3x²+1+10x^4
=x^8-x^6-x²+1
=x^6(x²-1)-(x²-1)
=(x²-1)(x^6-1)
=(x+1)(x-1)(x³+1)(x³-1)
=(x+1)(x-1)(x+1)(x²-x+1)(x-1)(x²+x+1)
=(x+1)²(x-1)²(x²-x+1)(x²+x+1)
=x^8+3x^6+x^4-4x^6-12x^4-4x²+x^4+3x²+1+10x^4
=x^8-x^6-x²+1
=x^6(x²-1)-(x²-1)
=(x²-1)(x^6-1)
=(x+1)(x-1)(x³+1)(x³-1)
=(x+1)(x-1)(x+1)(x²-x+1)(x-1)(x²+x+1)
=(x+1)²(x-1)²(x²-x+1)(x²+x+1)
全部回答
- 1楼网友:风格不统一
- 2021-02-10 16:23
(x4-4x2+1)(x4+3x2+1)+10x4,
=[(x4+1)2-x2(x4+1)-12x4]+10x4,
=(x4+1)2-x2(x4+1)-2x4,
=(x4+1-2x2)(x4+1+x2),
=(x2-1)2[(x2+1)2-x2],
=(x+1)2(x-1)2(x2+x+1)(x2-x+1).
故答案为:(x+1)2(x-1)2(x2+x+1)(x2-x+1).
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