Daca a+b=12 calculati valoarea sumei S=Abab+baba+aaa+bbb
Va rog repede


Răspuns :

a+b=12...=>b+a=12
S=(a+b+a+b)+(b+a+b+a)+a+b+a+b+a+b
S=(12+12)+(12+12)+(3*12)
S=24+24+36
S=48+36
S=84