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

Toán Lớp 7: 10. √x – 5 = 25 Tìm x ạ MN giúp iem vs ạ

Toán Lớp 7: 10. √x – 5 = 25
Tìm x ạ
MN giúp iem vs ạ

Comments ( 2 )

  1. 10 . \sqrt{x} – 5 = 25 (x >= 0 )
     ⇒ 10 . \sqrt{x} = 25 + 5 = 30
    ⇒ \sqrt{x} = 30 : 10 = 3
    ⇒ x = 3^2 = 9
    Vậy x = 9

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