5.1. Является ли пара чисел (2; 5), (-3; 1), (−2; - 4) и (−2,6; 0) pe шением неравенства: 1) -2x + 5y = 0; 3) 4xy - 2x + 5y > 0; 2) x² - 2x + 2y < 0; 4) x - 2x² - 3y < 0?​
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