July 2021 0 11 Report
Помогите пожалуйста! Даю 20 баллов! Найдите значение выражения (5,7x²y - 3,1xy + 8y³) - (6,9xy - 2,3²y + 8y³), если
a) x = -0,25; y = -4
б) x = -2; y = 3
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