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

Toán Lớp 6: (2x-3)³ -3=340 (7x-11)³ =2^5.5^2+200

Home/ Toán Lớp 6: (2x-3)³ -3=340 (7x-11)³ =2^5.5^2+200

Toán Lớp 6: (2x-3)³ -3=340 (7x-11)³ =2^5.5^2+200

Tháng Tám 13, 2022 Toán học 2 Comments 0 views

Toán Lớp 6: (2x-3)³ -3=340
(7x-11)³ =2^5.5^2+200

Comments ( 2 )

  1. huenthanh97
    huenthanh97
    13 Tháng Tám, 2022 at 6:55 chiều
    Reply
    (2x-3)^3 -3=340
    (2x-3)^3=343
    (2x-3)^3=7^3
    =>2x-3=7
    =>2x=10
    =>x=5
    (7x-11)^3 =2^5. 5^2+200
    (7x-11)^3=32.25+200
    (7x-11)^3=1000
    (7x-11)^3=10^3
    =>7x-11=10
    =>7x=21
    =>x=3

  2. dongoclandiem
    dongoclandiem
    13 Tháng Tám, 2022 at 6:55 chiều
    Reply
    (2x-3)^3 -3 =340
    => (2x-3)^3 = 343
    => (2x-3)^3 = 7^3
    => 2x -3 =7
    => 2x =10
    => x =5
    Vậy x =5 .
    $                                                           \\                                        $
    (7x-11)^3 =2^5 .5^2 +200
    => (7x-11)^3 = 32 . 25 +200 =1000
    => (7x-11)^3 =10^3
    => 7x -11 =10
    => 7x =  21
    => x =3
    Vậy x =3 . 
     

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

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