ta thay : ab + ba = (a+b). 11= 12.11= 132
=> ab+ba= 132
12= 6+6; 7+5; 8+4; 9+3
Bạn thử lấy 66+66; 75 + 57; 84+ 48; 93+39 đều có kết quả là 132 như nhau
Vậy ab + ba = 132
Tích cho mình nhé !
viet tiep vao cho trong:
A]2;4;8;...............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................;128
b]1;3;7;....................................................................................................................................................................................................................................................................................................................................................................................................................................................................;127
