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

Toán Lớp 8: P=-1/3a^2b^2*(6a+2/3a^2-b) Q=(4uv-v^3+v^2)*3/2u^2v^2

Toán Lớp 8: P=-1/3a^2b^2*(6a+2/3a^2-b)
Q=(4uv-v^3+v^2)*3/2u^2v^2

Comments ( 2 )

  1. Giải đáp:
     P=-2a^3b^2-2/9a^4b^2+1/3a^2b^3
    Q=6u^3v^3-3/2u^2v^5+3/2u^2v^4
    Lời giải và giải thích chi tiết:
     P=-1/3a^2b^{2}.(6a+2/3a^2-b)
    =-1/3a^2b^{2}.6a-1/3a^2b^{2}.(2)/3a^2-1/3a^2b^{2}.-b
    =-2a^3b^2-2/9a^4b^2+1/3a^2b^3
    Q=(4uv-v^3+v^2).(3)/2u^2v^2
    =(3)/2u^2v^{2}.4uv+3/2u^2v^{2}.-v^3+3/2u^{2}v^{2}.v^2
    =6u^3v^3-3/2u^2v^5+3/2u^2v^4

  2. -1/3a^2b^2(6a+2/3a^2-b)
    =-2a^3b^2-2/9a^2b^2+1/3a^2b^3
    ……………..
    (4uv-v^3+v^2)*3/2u^2v^2
    =6u^3v^3-3/2u^2v^5+3/2u^2v^4
     

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

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