1.234^2+0.766^2+2.468×0.766

1.234^2+0.766^2+2.468×0.766这道题怎么做?要有过程哈
2025-02-27 07:05:40
推荐回答(2个)
回答1:

原式=1.234^2+0.766^2+2×1.234×0.766
  =(1.234^2+1.234×0.766)+(0.766^2+1.234×0.766)
  =1.234×(1.234+0.766)+0.766×(0.766+1.234)
  =(1.234+0.766)×(0.766+1.234)
  =4

回答2:

1.234�0�5+0.766�0�5+2.468×0.766= 1.234�0�5+2×1.234×0.766×0.766�0�5= (1.234+0.766)�0�5= 2�0�5= 4