Răspuns:
1) 3|c|/4+1/4=c+2
3|c|+1=4c+8
3|c|=4c+7
|c|=(4c+7)/3
|c|>0---->(4c+7)/3>0---->4c+7>0---->4c>-7--->c>-7/4--->c>-1,75
Dacă c aparține Z---->c=-1
2) a=
[tex] \sqrt{52} + \sqrt{208} = 2 \sqrt{13} + 4 \sqrt{13} = 6 \sqrt{13} = \sqrt{468} [/tex]
a-19>0---->a>19
[tex] \sqrt{468} > \sqrt{361} [/tex]
468>361 (Adevărat)
