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

Toán Lớp 9: A = `√3` `-` `2/(2-√3)` + `√(1- √3)^2`

Home/ Toán Lớp 9: A = `√3` `-` `2/(2-√3)` + `√(1- √3)^2`

Toán Lớp 9: A = `√3` `-` `2/(2-√3)` + `√(1- √3)^2`

Tháng Hai 19, 2023 Toán học 2 Comments 0 views

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

Comments ( 2 )

  1. thudan
    thudan
    19 Tháng Hai, 2023 at 12:41 chiều
    Reply
    A=sqrt3 – 2/(2-sqrt3 )+sqrt{(1-sqrt3 )^2}
    A=sqrt3 – (2*(2+sqrt3 ))/((2-sqrt3 )(2+sqrt3 ))+|1-sqrt3 |
    A=sqrt3 – (4+2sqrt3 )/(4-3) +(sqrt3 – 1)
    A=sqrt3 – (4+2sqrt3 ) +sqrt3 – 1
    A=sqrt3 – 4 -2sqrt3 + sqrt3 – 1
    A=-5
    Vậy A=-5

  2. tonhitruc
    tonhitruc
    19 Tháng Hai, 2023 at 12:41 chiều
    Reply
    A = sqrt3 – 2/(2 – sqrt3) + sqrt{(1 – sqrt3)^2}
    = sqrt3 – (2(2 + sqrt3))/((2 – sqrt3)(2 + sqrt3)) + |1 – sqrt3|
    = sqrt3 – (4 + 2sqrt3)/(4 – 3) + sqrt3 – 1
    = 2sqrt3 + (-(4 + 2sqrt3))/1 – 1
    = 2sqrt3 + (-4 – 2sqrt3) – 1
    = 2sqrt3 – 4 – 2sqrt3 – 1
    = -5
     Vậy A = -5

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

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