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

Toán Lớp 9: tinh va rut gon 1) √2^2 2) √4^2 3) √6^2 4) √8^2 5) √10^2 6) √(1/2)^2 7) √(4/5)^2 8) √(1/5)^2 9) √(0,01)^2 10) √ (-0,0001)^2

Toán Lớp 9: tinh va rut gon
1) √2^2
2) √4^2
3) √6^2
4) √8^2
5) √10^2
6) √(1/2)^2
7) √(4/5)^2
8) √(1/5)^2
9) √(0,01)^2
10) √ (-0,0001)^2

Comments ( 2 )

  1. Lời giải và giải thích chi tiết:
    1)
    \sqrt{2^2}
    = |2|
    = 2
    2)
    \sqrt{4^2}
    = |4|
    = 4
    3)
    \sqrt{6^2}
    = |6|
    = 6
    4)
    \sqrt{8^2}
    = |8|
    = 8
    5)
    \sqrt{10^2}
    = |10|
    = 10
    6)
    \sqrt{(1/2)^2}
    = |1/2|
    = 1/2
    7)
    \sqrt{(4/5)^2}
    = |4/5|
    = 4/5
    8)
    \sqrt{(1/5)^2}
    = |1/5|
    = 1/5
    9)
    \sqrt{(0,01)^2}
    = |0,01|
    = 0,01
    10)
    \sqrt{(-0,0001)^2}
    = |-0,0001|
    = 0,0001

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