Question

Stiind ca produsul a doua numereeste egal cu 12,iar diferenta numerelor este1, afla care sunt numerele respective

Answer 1

a*b=12=>a=12/b
a-b=1

12/b-b=1
(12-b²)/b=1
12-b²=b
-b²-b+12=0
(b-3)(b+4)=0
b=3
b=-4

a=12/b=>a=12/3=>a=4
               a=12/(-4)=>a=-3
Cind b=3 , a=4
         b=-4, a=-3