Помогите с неравенствами
Нер-ва:1) х+9≤23.........6у≥12....5х∠2....7а≤-14.....-8b≥-16.....2х-8≤4
Квадратн. нерав-ва:1)х²≤9....у²≤16...b²≤25...а²≤36...х²-64≤0....х²-81≤0......у²-25≤0....а²-9≤0....у²-4≥0.....х²+7≤0.....х²+9≤10......х²-2≥2.....у²-8≤-9
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