因式分解:(a-b)(3a+b)²+(a+3b)²(b–a)
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解决时间 2021-03-17 21:48
- 提问者网友:记得曾经
- 2021-03-16 22:38
因式分解:(a-b)(3a+b)²+(a+3b)²(b–a)
最佳答案
- 五星知识达人网友:往事隔山水
- 2021-03-16 23:10
(a-b)(3a+b)²+(a+3b)²(b-a)
=(a-b)(3a+b)²-(a+3b)²(a-b)
=(a-b)[(3a+b)²-(a+3b)²]
=(a-b)[(3a+b)+(a+3b)][(3a+b)-(a+3b)]
=(a-b)(3a+b+a+3b)(3a+b-a-3b)
=(a-b)(4a+4b)(2a-2b)
=8(a-b)²(a+b)
=(a-b)(3a+b)²-(a+3b)²(a-b)
=(a-b)[(3a+b)²-(a+3b)²]
=(a-b)[(3a+b)+(a+3b)][(3a+b)-(a+3b)]
=(a-b)(3a+b+a+3b)(3a+b-a-3b)
=(a-b)(4a+4b)(2a-2b)
=8(a-b)²(a+b)
全部回答
- 1楼网友:詩光轨車
- 2021-03-17 00:44
(a-b)(3a b)² (a 3b)²(b-a)=(a-b)(3a b)²-(a 3b)²(a-b)=(a-b)[(3a b)²-(a 3b)²]=(a-b)[(3a b) (a 3b)][(3a b)-(a 3b)]=(a-b)(3a b a 3b)(3a b-a-3b)=(a-b)(4a 4b)(2a-2b)=8(a-b)²(a b)
- 2楼网友:风格不统一
- 2021-03-16 23:27
(a-b)(3a+b)²+(a+3b)²(b-a)
=(a-b)(3a+b)²-(a+3b)²(a-b)
=(a-b)[(3a+b)²-(a+3b)²]
=(a-b)[(3a+b)+(a+3b)][(3a+b)-(a+3b)]
=(a-b)(4a+4b)(2a-2b)
=8(a+b)(a-b)²
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