来源:学生作业帮 编辑:大师作文网作业帮 分类:数学作业 时间:2024/11/06 09:58:14
计算:6.2345²+0.2345²-6.2345×0.469
6.2345²+0.2345²-6.2345×0.469
=6.2345²-2x6.2345x0.2345+0.2345²
=(6.2345-0.2345)²
=6²
=36
如果本题有什么不明白可以追问,
再问: =6.2345²-2x6.2345x0.2345+0.2345²这一步是什么意思
再答: 6.2345×0.469 =2x6.2345x0.2345 呀