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hoanganhluuthe
2 năm trước
Rút gọn rồi tính a, 3x + căn 16 -24x + 9x mũ 2 với x = -3 b, 5x - căn 4x mũ 2 +12x + 9 với x = - căn 5 ai giúp mình với ạ
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