Question

简便计算请用简便方法计算

Answer 1

1.2345²+（0.7655）²+2.469×0.7655
=1.2345^2+2×1.2345×0.7655+0.7655^2
=(1.2345+0.7655)^2
=2^2
=4
同学你好，如果问题已解决，记得右上角采纳哦~~~您的采纳是对我的肯定~谢谢哦