Đoạn thẳng MN chia hình vuông ABCD thành 2 hình chữ nhật ABMN và MNCD. Biết tổng và hiệu chu vi 2 hình chữ nhật là 1986 cm và 170 cm. Hãy tính diện tích 2 hình chữ nhật đó.
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