题目内容：

求:1.2345^2+2.469*0.7655+0.7655^2 用公式法

优质解答

1.2345^2+2.469*0.7655+0.7655^2
=1.2345^2+2*1.2345*0.7655+0.7655^2
=(1.2345+0.7655)^2
=2^2
=4