abc2+2abc=abc x 10 + 2000+abc=abc x 11 + 2000
Vậy abc2+2abc=abc x 11+2000
Trả lời lại:abc2+2abc=abc*10+2+2000+abc=abc*11+2002
Vậy abc2+2abc=abc*11+2002
abc2+2abc=abc0+2+2000+abc
=abc x 10 +abc +2002=abc x(10+1) +2002
=abc x 11 +2002
\(\overline{abc2}+\overline{2abc}\)
\(=1000a+100b+10c+2+2000+100a+10b+c\)
\(=1100a+110b+11c+2002\)
\(=11.\left(100a+10b+c+182\right)\)
\(=11.\left(\overline{abc}+182\right)\)