2.6+1.4x(1.7-0.3)怎样简便计算
4个回答
展开全部
2.6+1.4×(1.7-0.3)
=2.6+1.4×1.4
=1.3×1.3+(1.3-1)^2
=1.3^2+1.3^2-2×1.3+1
=2×(1十0.3)^2-2.6+1
=2×(1+0.6+0.09)-1.6
=2十1.2+0.18-1.6
=0.4+1.38
=1.78
=2.6+1.4×1.4
=1.3×1.3+(1.3-1)^2
=1.3^2+1.3^2-2×1.3+1
=2×(1十0.3)^2-2.6+1
=2×(1+0.6+0.09)-1.6
=2十1.2+0.18-1.6
=0.4+1.38
=1.78
已赞过
已踩过<
评论
收起
你对这个回答的评价是?
展开全部
=2.6+1.4×1.4
=2.6+1.4+1.4×0.4
=4+0.56
=4.56
=2.6+1.4+1.4×0.4
=4+0.56
=4.56
本回答被网友采纳
已赞过
已踩过<
评论
收起
你对这个回答的评价是?
展开全部
2.6+1.4x(1.7-0.3)
=2.6+1.4*1.4
=2.6+1.4+1.4*0.4
=4+0.56
=4.56
=2.6+1.4*1.4
=2.6+1.4+1.4*0.4
=4+0.56
=4.56
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