a=[tex] \frac{3n+4+5m+8}{2n+3+2m+3}[/tex]
a=4 =>4=[tex] \frac{3n+4+5m+8}{2n+3+2m+3} [/tex] => [tex] \frac{4}{1}= \frac{3n+12+5m}{2n+6+2m} [/tex]
amplifici pe [tex] \frac{4}{1} [/tex] cu 2n+6+2m
=> [tex] \frac{8n+24+8m}{2n+6+2m}= \frac{3n+12+5m}{2n+6+2m} =>
(8n+24+8m)*(2n+6+2m)=(2n+6+2m)*(3n+12+5m)
=>
[tex]16n^{2} [/tex]+48n+16mn+48n+144+48m+16mn+48m+[tex] 16m^{2} [/tex]= [tex] 6n^{2} [/tex]+24n+10m+9n+72+30m+6mn+24M+[tex] 10m^{2} [/tex]
Asta e prima parte... o pun imediat pe a 2-a, ai putina rabdare :)