Ответ:
7. (4х²-2ху+у²)-(х²- 2ху -2ху²+у²)=3х²+2ху²
8.(11n+39)-(4n+11)=11n+39-4n-11=7n+28
n-2
(7*2)+28)):7=42/7=6
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Ответ:
7. (4х²-2ху+у²)-(х²- 2ху -2ху²+у²)=3х²+2ху²
8.(11n+39)-(4n+11)=11n+39-4n-11=7n+28
n-2
(7*2)+28)):7=42/7=6