[tex]a= 6\sqrt{2} [/tex] cand introducem 6 in radical, vine la patrat
[tex]a= \sqrt{6^2*2} = \sqrt{72} [/tex]
[tex]b= 2\sqrt{19} [/tex]
[tex]b= \sqrt{76} [/tex]
[tex] \sqrt{76} > \sqrt{72} [/tex]
[tex]b>a[/tex]
[tex]6b) \frac{a^2+5a+6}{a^2-4} = \frac{(a+2)(a+3)}{(a-2)(a+2)} = \frac{a+3}{a-2} [/tex]
