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    CallmeJ_1111

    ☆quiet follow Yell with Emoji 💖 👍 🎉 😍
    POIPOI 3

    CallmeJ_1111

    ☆quiet follow

    Trong các mệnh đề sau, mệnh đề nào đúng?
    A. x2 + y > 0;
    B. x2 + 3y2 = 2;
    C. –x + y3 ≤ 0;
    D. x – y < 1.

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