Matematika

Pertanyaan

Tentukan Hp dari : |3×+4| = x-8

2 Jawaban

  • |3×+4| = x-8
    => positif
    (3×+4) = x-8
    3x-x = -8 -4
    2x = -12
    x = -12/2 = -6
    =>negatif
    -(3×+4) = x-8
    -3x - 4 = x-8
    -3x - x = -8 +4
    -4x = -4
    x = -4/-4 = 1
    Jadi, Hp = {x| x = 1 atau x = -6}
  • |3x + 4| = x -8 
    3x + 4 = ± (x-8)

    (+) 3x + 4 = + ( x-8)
    3x + 4 = x-8
    3x - x = -8-4 
    2x = -12
    x = -6

    (-)3x + 4 = - ( x-8)
    3x + 4 = -x + 8
    3x +x = 8-4 
    4x = 4 
    x= 1 

    HP = { x= -6 , x = 1}

    semoga bermanfaat dan maaf jika salah :)

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