Question

Ex 2 ....ajutati-ma.:(

Answer 1

a/2= b/3 = c/4
$6 a^{2} + b^{2} -2 c^{2} =9$

a= 2b/3  c= 4b/ 3
inlocuim in ecuatia de mai sus si obtinem :
$24 b^{2} /9 + b^{2} - 32b^{2} /9=9$
aducem la acelasi numitor =>        $b^{2} = 81$    b=9 ( nr pozitive )
a=6       c= 12