数学计算:①(x-y)^7/(y-x)^6+(-x-y)^3/(x+y)^2 ②(-x^3)^4/((x^2)^3/x^6
展开全部
①(x-y)^7/(y-x)^6+(-x-y)^3/(x+y)^2
=(x-y)^7/(x-y)^6-(x+y)^3/(x+y)^2
=x-y+x+y
=2x
②(-x^3)^4/((x^2)^3/x^6
=x^12/(x^6*x^6)
=x^12/x^12
=1
=(x-y)^7/(x-y)^6-(x+y)^3/(x+y)^2
=x-y+x+y
=2x
②(-x^3)^4/((x^2)^3/x^6
=x^12/(x^6*x^6)
=x^12/x^12
=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)^7/(y-x)^6+(-x-y)^3/(x+y)^2
=(x-y)-(x+y)=x-y-x-y=-2y
②(-x^3)^4/((x^2)^3/x^6
=x^12/x^6/x^6=x^(12-6-6)=x^0=1
=(x-y)-(x+y)=x-y-x-y=-2y
②(-x^3)^4/((x^2)^3/x^6
=x^12/x^6/x^6=x^(12-6-6)=x^0=1
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