Giải:
( 12 + 77 + 34 + 23 + 88 + 45 + 55 + 66 ) . ( 45200 - 1808 .25 )
=( 12 + 77 + 34 + 23 + 88 + 45 + 55 + 66 ) . ( 45200 - 45200 )
=( 12 + 77 + 34 + 23 + 88 + 45 + 55 + 66 ) . 0
=0
Học tốt!!!
(12+77+34+23+88+45+55+66)* (45200-1808*25)
=(12+77+34+23+88+45+55+66)* (45200-45200)
=(12+17+34+23+88+45+55+66)* 0
=0
\(\left(12+77+34+23+88+45+55+66\right)\times\left(45200-1808\times25\right)\)
\(=\left(12+77+34+23+88+45+55+66\right)\times\left(45200-45200\right)\)
\(=\left(12+77+34+23+88+45+55+66\right)\times0\)
\(=0.\)