Răspuns :
3 a+3b=6
3 ( a+b)=6:3
a+b=2
a=0,1,2
b=2,1,0
Daca a= 0
0•0-2•2=-4
Daca a=1
1•1-1•1=0
Daca a =2
2•2-0•0=4
Cred ca problema e gresita
3 ( a+b)=6:3
a+b=2
a=0,1,2
b=2,1,0
Daca a= 0
0•0-2•2=-4
Daca a=1
1•1-1•1=0
Daca a =2
2•2-0•0=4
Cred ca problema e gresita
a² - b² = 24 => (a+b)(a-b)=24 daca 3a+3b=6 |:3 ⇒ a+b=2
↓
2*(a-b) = 24 |:2
a - b = 12 .
↓
2*(a-b) = 24 |:2
a - b = 12 .