👤
a fost răspuns

cecetati daca (x9x+x6)|2(xx9+8x+7),unde z esre cifra in baza 10

Răspuns :

Nyx
 (x9x+x6) | 2(xx9+8x+7)x9x=100x+90+xx6=10x+6(x9x+x6)=100x+90+x+10x+6=111x+96

xx9=100x+10x+98x=80+x

xx9+8x+7=100x+10x+9+80+x+7=111x+89+7=111x+96

 (x9x+x6) | 2(xx9+8x+7)<=>(111x+96) | 2(111x+96) (A)

Alte intrebari