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

Toán Lớp 8: Tìm x: ( √x – 6) ( √x+6) – √x ( √x-5) = 9

Tháng Bảy 16, 2022 Toán học 1 Comment 0 views

Toán Lớp 8: Tìm x:
( √x – 6) ( √x+6) – √x ( √x-5) = 9

Comments ( 1 )

  1. ngocle44
    ngocle44
    16 Tháng Bảy, 2022 at 7:07 chiều
    Reply
    (√x – 6)(√x +6) – √x (√x-5)=9
    x – 6^2 – (x – 5x)=9
    x – 36 -x + 5x =9
    -36 +5x =9
    => 5x = 45
    => x=9

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

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