\(\left(196-1^2\right).\left(196-2^2\right)....\left(196-20^2\right)\)
ta có \(196=14^2\)
Mà Trong biểu thức trên có hiệu là (196-\(14^2\))
=> Biểu thức trên = 0
mình nghĩ thế
Trả lời:
\(\left(196-1^2\right).\left(196-2^2\right).....\left(196-20^2\right)\)
\(=\left(196-1^2\right).\left(196-2^2\right).....\left(196-14^2\right).....\left(196-20^2\right)\)
\(=\left(196-1^2\right).\left(196-2^2\right).....\left(196-196\right).....\left(196-20^2\right)\)
\(=\left(196-1^2\right).\left(196-2^2\right).....0.\left(196-20^2\right)\)
\(=0\)
Hok tốt!
Good girl
(196-12).(196-22)....(196-142).(196-152)...(196-202)
= (196-12).(196-22)....(196-196).(196-152)...(196-202)
= (196-12).(196-22)....0.(196-152)...(196-202)
= 0