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

Toán Lớp 9: √1/3 – √ ( √3 – 2 ) ² + 2/ √3 -1

Home/ Toán Lớp 9: √1/3 – √ ( √3 – 2 ) ² + 2/ √3 -1

Toán Lớp 9: √1/3 – √ ( √3 – 2 ) ² + 2/ √3 -1

Tháng Bảy 4, 2022 Toán học 1 Comment 0 views

Toán Lớp 9: √1/3 – √ ( √3 – 2 ) ² + 2/ √3 -1

Comments ( 1 )

  1. ankim
    ankim
    4 Tháng Bảy, 2022 at 12:29 chiều
    Reply
    \sqrt{1/3}-\sqrt{(\sqrt{3}-2)^2}+2/(\sqrt{3}-1)
    =1/\sqrt{3}-\sqrt{(2-\sqrt{3})^2}+(2(\sqrt{3}+1))/((\sqrt{3}-1)(\sqrt{3}+1))
    =\sqrt{3}/3-|2-\sqrt{3}|+(2(\sqrt{3}+1))/(2)
    =\sqrt{3}/3-2+\sqrt{3}+\sqrt{3}+1
    =\sqrt{3}/3+2\sqrt{3}-1
    =(\sqrt{3}+6\sqrt{3}-3)/3
    =(7\sqrt{3}-3)/3
     

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

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