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

Toán Lớp 8: Tìm x c)-3x²+10x+8=0 d)x⁴+2x²-3=0

Toán Lớp 8: Tìm x
c)-3x²+10x+8=0
d)x⁴+2x²-3=0

Comments ( 1 )

  1. Đáp án:
     
    Giải thích các bước giải:
     

    toan-lop-8-tim-c-3-10-8-0-d-2-3-0

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