Question

tính hợp lý:

\(\left(10^2+11^2+12^2\right):\left(13^2+14^2\right)\)

Answer 1

( 100 + 121 + 144 ) : ( 169 + 196 )

= 365 : 365 = 1

Answer 2

\(\left(10^2+11^2+12^2\right):\left(13^2+14^2\right)\)

\(=\left(100+121+144\right):\left(169+196\right)\)

\(=\left(221+144\right):365\)

\(=365:365\)

\(=1\)Vậy kết quả = 1

Answer 3

có cách nào nhanh honkhong