Пожалуйста! !!!!!!!!!!!!!!!!!!!!!

Question

Пожалуйста! !!!!!!!!!!!!!!!!!!!!!

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Answer 1

(х²+4ху+3у²)/(х²-9у²=(х²+ху+3ху+3у²)/(х²=9у²)=(х(х+у)+3у(х+у))/(х²-9у²)=
(х+у)(х+3у)/(х-3у)(х+3у)=(х+у)/(х-3у)=(1510+503)/(1510-3*503)=2013/(1510-1509)=2013