Question

a+b=326
ax2+bx3=841
a,b=?

Va rog!!!!! Ajutor!!!!

Answer 1

2a+3b=841
a+b=326 |(-2)

2a+3b=841
-2a-2b=-652

b=841-652
b=189

a+b=326 -----> a=137

este sistem

Answer 2

a+b=326⇒a=326-b
$\left \{ {{2a+3b=841} \atop {a=326-b}} \right.$⇒
2(326-b)+3b=841
652-2b+3b=841
b=841-652
b=189
a=326-189
a=137