Р=(8х²-3ху-5у²)-(7х²-5ху+6у²)=
=8х²-3ху-5у²-7х²+5ху-6у²=
=х²+2ху-11у²
Ответ:х²+2ху-11у²
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Р=(8х²-3ху-5у²)-(7х²-5ху+6у²)=
=8х²-3ху-5у²-7х²+5ху-6у²=
=х²+2ху-11у²
Ответ:х²+2ху-11у²