Matematika

Pertanyaan

Tentukan HP dari
1.|2x+5|=-2
2.|4x-6|=7
3.|2x-1|=1
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2 Jawaban

  • 2X+5=2x+5 Karena tidak bisa dijumlah.
  • 1 |2x + 5| = -2
    2x + 5 = -2
    2x = -2 - 5
    2x = -7
    x = -7/2
    2x + 5 = 2
    2x = 2 - 5
    2x = -3
    x = -3/2
    HP = {-7/2, -3/2}
    2 |4x - 6| = 7
    4x - 6 = 7
    4x = 7 + 6
    4x = 13
    x = 13/4
    4x - 6 = -7
    4x = -7 + 4
    4x = -3
    x = -3/4
    HP = {-3/4, 13/4}
    3 |2x - 1| = 1
    2x - 1 = 1
    2x = 1 + 1
    2x = 2
    x = 1
    2x - 1 = -1
    2x = -1 + 1
    2x = 0
    x = 0
    HP = {0, 1}

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