因式分解【要过程】
5个回答
北京埃德思远电气技术咨询有限公司
2023-08-25 广告
2023-08-25 广告
"整定计算的工作步骤,大致如下:1.确定整定方案所适应的系统情况。2.与调度部门共同确定系统的各种运行方式。3.取得必要的参数与资料(保护图纸,设备参数等)。4.结合系统情况,确定整定计算的具体原则。5.进行短路计算。6.进行保护的整定计算...
点击进入详情页
本回答由北京埃德思远电气技术咨询有限公司提供
展开全部
(1)(x+y)(5m+3n)^2-(x+y)(m-n)^2
=(x+y)【(5m+3n)^2-(m-n)^2】
=(x+y)(5m+3n-m+n)(5m+3n+m-n)
=(x+y)(4m+4n)(6m+2n)
=8(x+y)(m+n)(3m+n)
(2) x^n+4-x^n
= x^n(x^4-1)
= x^n(x²-1)(x²+1)
==x^n(x-1)(x+1)(x²+1)
=(x+y)【(5m+3n)^2-(m-n)^2】
=(x+y)(5m+3n-m+n)(5m+3n+m-n)
=(x+y)(4m+4n)(6m+2n)
=8(x+y)(m+n)(3m+n)
(2) x^n+4-x^n
= x^n(x^4-1)
= x^n(x²-1)(x²+1)
==x^n(x-1)(x+1)(x²+1)
已赞过
已踩过<
评论
收起
你对这个回答的评价是?
展开全部
(x+y)(5m+3n)^2-(x+y)(m-n)^2
=(x+y)[(5m+3n)^2-(m-n)^2]
=(x+y)[(5m+3n)-(m-n)][(5m+3n)+(m-n)]
=(x+y)(5m+3n-m+n)(5m+3n+m-n)
=(x+y)(4m+4n)(6m+2n)
=8(x+y)(m+n)(3m+n)
(2) x^(n+4)-x^n
=x^n*x^4-x^n
=x^n(x^4-1)
=x^n(x^2-1)(x^2+1)
=x^n(x-1)(x+1)(x^2+1)
=(x+y)[(5m+3n)^2-(m-n)^2]
=(x+y)[(5m+3n)-(m-n)][(5m+3n)+(m-n)]
=(x+y)(5m+3n-m+n)(5m+3n+m-n)
=(x+y)(4m+4n)(6m+2n)
=8(x+y)(m+n)(3m+n)
(2) x^(n+4)-x^n
=x^n*x^4-x^n
=x^n(x^4-1)
=x^n(x^2-1)(x^2+1)
=x^n(x-1)(x+1)(x^2+1)
已赞过
已踩过<
评论
收起
你对这个回答的评价是?
展开全部
(1)(x+y)(5m+3n)^2-(x+y)(m-n)^2
=(x+y)(25m²+30mn+9n²-m²+2mn-n²)
=(x+y)(24m²+32mn+8n²)
=8(x+y)(3m²+4mn+n²)
=8(x+y)(3m+n)(m+n)
(2) x^n+4-x^n
=4
你的第二题题目错了吧?
=(x+y)(25m²+30mn+9n²-m²+2mn-n²)
=(x+y)(24m²+32mn+8n²)
=8(x+y)(3m²+4mn+n²)
=8(x+y)(3m+n)(m+n)
(2) x^n+4-x^n
=4
你的第二题题目错了吧?
已赞过
已踩过<
评论
收起
你对这个回答的评价是?
展开全部
(1)(x+y)(5m+3n)^2-(x+y)(m-n)^2
=(x+y)[(5m+3n)^2-(x+y)(m-n)^2]
=(x+y)[(5m+3n)+(m-n)][(5m+3n)-(m-n)]
=(x+y)(5m+3n+m-n)(5m+3n-m+n)
=(x+y)(6m+2n)(4m+4n)
=8(x+y)(3m+n)(m+n)
(2) x^n+4-x^n
=4
=(x+y)[(5m+3n)^2-(x+y)(m-n)^2]
=(x+y)[(5m+3n)+(m-n)][(5m+3n)-(m-n)]
=(x+y)(5m+3n+m-n)(5m+3n-m+n)
=(x+y)(6m+2n)(4m+4n)
=8(x+y)(3m+n)(m+n)
(2) x^n+4-x^n
=4
已赞过
已踩过<
评论
收起
你对这个回答的评价是?
推荐律师服务:
若未解决您的问题,请您详细描述您的问题,通过百度律临进行免费专业咨询