Matematika

Pertanyaan

selesaikan Cara berikut Dengan Aljabar.
A). 5 = 2|p| - 3
B). 2|x| = 13
C). |28| = 5 |p| + 3

Tolong Bantu ;(

2 Jawaban

  • A) 5 = 2p - 3
    5+3 = 2 p
    8 = 2 p (2p = 2×p)
    8:2 = p
    4 = p

    B) 2x = 13
    x = 13 : 2 = 6.5

    C) 28 = 5p + 3
    28-3 = 5p
    25 = 5p
    25 : 5 = p
    5 = p

    maaf kalau salah
  • A).5= 2|p|-3
    2|p|= 5+3
    2|p|= 8
    |p|= 4 › p = ±4
    B).2|x|=13
    |x| = 13/2 › x = ±13/2
    C).|28|=5|p|+3
    28-3/5 = |p|
    |p| = 5 › p= ±5
    karena |x|=|-x|=x

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