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

Toán Lớp 8: Giúp mình với! d/ x^2 + 5x + 4 = x^2 + 1x + 4x + 4 = (x^2 + 1x) + (4x + 4) = ……. e/ x^2 − 7x + 12 = x^2 − 3x − 4x + 12 = (x^2 − 3x) + (

Home/ Toán Lớp 8: Giúp mình với! d/ x^2 + 5x + 4 = x^2 + 1x + 4x + 4 = (x^2 + 1x) + (4x + 4) = ……. e/ x^2 − 7x + 12 = x^2 − 3x − 4x + 12 = (x^2 − 3x) + (

Toán Lớp 8: Giúp mình với! d/ x^2 + 5x + 4 = x^2 + 1x + 4x + 4 = (x^2 + 1x) + (4x + 4) = ……. e/ x^2 − 7x + 12 = x^2 − 3x − 4x + 12 = (x^2 − 3x) + (

Tháng Sáu 10, 2022 Toán học 1 Comment 0 views

Toán Lớp 8: Giúp mình với!
d/ x^2 + 5x + 4 = x^2 + 1x + 4x + 4 = (x^2 + 1x) + (4x + 4) = …….
e/ x^2 − 7x + 12 = x^2 − 3x − 4x + 12 = (x^2 − 3x) + (− 4x + 12) = ……

Comments ( 1 )

  1. hienchaudiem
    hienchaudiem
    10 Tháng Sáu, 2022 at 10:39 chiều
    Reply
    y10000
    d )
    •x² + 5x + 4
    = x² + 1x + 4x + 4
    = (x²+ 1x) + (4x + 4)
    = x . ( x + 1) + 4 . ( x + 1 )
    = ( x + 4 ) . ( x + 1)
     e )
    •x² − 7x + 12
    = x²− 3x − 4x + 12
    = (x² − 3x) + (− 4x + 12)
    = x . ( x – 3 ) – 4 . ( x -3 )
    = ( x – 4 ) . ( x – 3 )

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

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