√(1-√2)bình phương trừ √2

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√(1-√2)bình phương trừ √2

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RI SƠ 6 years 2020-11-24T13:21:18+00:00 1 Answers 102 views 0

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  1. Ladonna
    0
    2020-11-24T13:23:10+00:00
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    $\sqrt{(1-\sqrt{2})^2}-\sqrt{2}$

    $=|1-\sqrt{2}|-\sqrt{2}$

    $=\sqrt{2}-1-\sqrt{2}$

    $=-1$

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Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )