Question

Daca x la 2 -9=(x+a)(x-b), a,b € Z , atunci produsul lui a*b=.... Va rogggg ajutorrrrrr.....

Answer 1

[tex]x^2-9=(x+a)(x-b)\\ (x-3)(x+3)=(x+a)(x-b)=\ \textgreater \ a=b=3\\ a*b=9 [/tex]