x+y=8; x*y=15
x=5; y=3
x³*y²-y³*5²=5³*3²-3³*5²=125*9-27*25=1125-675=450
Ответ: 450
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x+y=8; x*y=15
x=5; y=3
x³*y²-y³*5²=5³*3²-3³*5²=125*9-27*25=1125-675=450
Ответ: 450