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,=6.2345²-2x6.2345x0.2345+0.2345²这一步是什么意思6.2345×0.469=2x6.2345x0.2345 呀
计算:6.2345²+0.2345²-6.2345×0.469
计算:6.2345²+0.2345²-6.2345×0.469
数学人气:303 ℃时间:2020-01-28 14:42:39
优质解答
我来回答
类似推荐
猜你喜欢
- 1氧化还原反应用双线桥法标电子数时,是用变化的化合价乘以这个元素右下角的数再乘以前面的系数吗?
- 2多用电表测小灯泡电压电流电阻时,是不是要求他们所在电路要断开电源
- 3二次根式-3√3x与√2ax的和是一个二次根式,则正整数a的最小值为
- 4当一小块金属钠久置在潮湿的空气中,会发生的变化是( ) ①4Na+O2=2Na2O ②Na2O+H2O=2NaOH ③2NaOH+CO2=Na2CO3+H2O ④Na2CO3+CO2+H2O=2NaHCO3. A.只有① B.①② C.①
- 5The science of medicine,___ which progress has been very rapid.A.to B.with C.in D.among
- 6所有图形表面积、体积、周长、面积的文字公式和字母公式?
- 7关于月亮的现代诗,要多一些!
- 8When i was seven years old my mom was diagnosed with cancer 翻译
- 9No,you must turn left 是问Must I turn right 还是问Can I turn right?
- 10英语翻译