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

Toán Lớp 8: a) 3 x(x+1)-2 x(x+2)=-1-x b) 4 x(x-2019)-x+2019=0 c) (x-4)^{2}-36=0 d) x^{2}+8 x+16=0. e) x(x+6)-7 x-42=0 f) 25 x^{2}-9=0

Toán Lớp 8: a) 3 x(x+1)-2 x(x+2)=-1-x
b) 4 x(x-2019)-x+2019=0
c) (x-4)^{2}-36=0
d) x^{2}+8 x+16=0.
e) x(x+6)-7 x-42=0
f) 25 x^{2}-9=0

Comments ( 2 )

  1. Đáp án:

     

    Giải thích các bước giải:

     

    toan-lop-8-a-3-1-2-2-1-b-4-2019-2019-0-c-4-2-36-0-d-2-8-16-0-e-6-7-42-0-f-25-2-9-0

  2. Giải đáp+Lời giải và giải thích chi tiết:

     

    toan-lop-8-a-3-1-2-2-1-b-4-2019-2019-0-c-4-2-36-0-d-2-8-16-0-e-6-7-42-0-f-25-2-9-0

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

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