Matematika

Pertanyaan

1. I 3×-2 I < I 2×-1 I

2. I 5×-7 I > I 2×+1 I

2 Jawaban

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    Gambar lampiran jawaban Dhiyafairuz11
  • 1. | 3x-2 | < | 2x-1 |
    = | 3x-2x | < | -1+2 |
    = | x | < | 1 |
    = x < 1
    Hp => {x | x < 1, x €R}

    2. | 5x-7 | > | 2x-1 |
    = | 5x-2x | > | -1+7 |
    = | 3x | > | 6 |
    = | x | > | 6:3 |
    = | x | > | 2 |
    = x > 2
    Hp => {x | x > 2, x €R}

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