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Se stie ca ,, a×x =148" si ,,a×y=97". aflati a×(x+y) si a×(x-y) raspuns potrivit clasei aVa !! mersii

Răspuns :

ax(X+y)=axX+axy
ax(X+y)=148+97
ax(X+y)=245
ax(X-y)=axX-axy
ax(X-Y)=148-97=51