Mathematics, 24.08.2021 17:20 mitch80

Chocáctậphợp:A =x∈R|x2 + 7x + 6x2−4= 0 ,B = {x∈N|2x≤8}. a) Hãy viết lại các tập hợp A, B dưới dạng liệt kê các phần tử. b) Tìm A∪B, A∩B.

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Chocáctậphợp:A =x∈R|x2 + 7x + 6x2−4= 0 ,B = {x∈N|2x≤8}. a) Hãy viết lại các tập hợp A, B dưới dạng l...

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