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    Question

    √2025.12 × √256.03 + √399.89

    ×√(?) = 33.99 × 40.12
    A 1521 Correct Answer Incorrect Answer
    B 441 Correct Answer Incorrect Answer
    C 1600 Correct Answer Incorrect Answer
    D 1024 Correct Answer Incorrect Answer
    E 1681 Correct Answer Incorrect Answer

    Solution

    √2025.12 × √256.03 + √399.89 ×√(?) = 33.99 × 40.12 √2025 × √256 + √400 × √? = 33.99 × 40.12 45× 16 + 20 ×√(?) = 34 × 40 720 + 20 ×√(?) = 1360 20 ×√(?) = 1360 – 720 20 ×√(?) = 640 √(?) = 32 ? = 32 × 32 = 1024

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