123的2次方-122*118要过程O(∩_∩)O谢谢
问题描述:
123的2次方-122*118要过程O(∩_∩)O谢谢
答
123的2次方-122*118
=(122+1)^2-122*118
=122^2+244+1-122*118
=122(122-118)+244+1
=122x4+244+1
=122x6+1
=733