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222-9+11+12:2*14+14 = ? ( )

Toán Lớp 9: rút gọn $\sqrt{\frac{2-\sqrt{3}}{2}}$+$\frac{1-\sqrt{3}}{2}$

Tháng Bảy 11, 2022 Toán học 2 Comments 0 views

Toán Lớp 9: rút gọn
$\sqrt{\frac{2-\sqrt{3}}{2}}$+$\frac{1-\sqrt{3}}{2}$

Comments ( 2 )

  1. lyly98
    lyly98
    11 Tháng Bảy, 2022 at 12:12 sáng
    Reply
    \sqrt{frac{2-\sqrt{3}}{2}}+frac{1-\sqrt{3}}{2}
    =\sqrt{frac{2(2-\sqrt{3})}{2.2}}+frac{1-\sqrt{3}}{2}
    =\sqrt{frac{4-2\sqrt{3}}{4}}+frac{1-\sqrt{3}}{2}
    =frac{\sqrt{4-2\sqrt{3}}}{\sqrt{4}}+frac{1-\sqrt{3}}{2}
    =frac{\sqrt{3-2\sqrt{3.1}+1}}{2}+frac{1-\sqrt{3}}{2}
    =frac{\sqrt{(\sqrt{3}-1)^2}+1-\sqrt{3}}{2}
    =frac{|\sqrt{3}-1|+1-\sqrt{3}}{2}
    =frac{\sqrt{3}-1+1-\sqrt{3}}{2}
    =0/2
    =0

  2. huongtructram
    huongtructram
    11 Tháng Bảy, 2022 at 12:11 sáng
    Reply
    Giải đáp:
    Bạn tham khảo :

    toan-lop-9-rut-gon-sqrt-frac-2-sqrt-3-2-frac-1-sqrt-3-2

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222-9+11+12:2*14+14 = ? ( )

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