(1+0.12+0.23)×(0.12+0.23+0.34)-(1+0.12+0.23+0.34)×(0.12+0.23)=______.
展开全部
设0.12+0.23=x,0.12+0.23+0.34=y.
则:(1+0.12+0.23)×(0.12+0.23+0.34)-(1+0.12+0.23+0.34)×(0.12+0.23)
=(1+x)y-(1+y)x,
=y+xy-x-xy,
=y-x,
=(0.12+0.23+0.34)-(0.12+0.23),
=0.12-0.12+0.23-0.23+0.34,
=0.34.
故答案为:0.34.
则:(1+0.12+0.23)×(0.12+0.23+0.34)-(1+0.12+0.23+0.34)×(0.12+0.23)
=(1+x)y-(1+y)x,
=y+xy-x-xy,
=y-x,
=(0.12+0.23+0.34)-(0.12+0.23),
=0.12-0.12+0.23-0.23+0.34,
=0.34.
故答案为:0.34.
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