Matematika

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  • Kelas 10 Matematika
    Bab Nilai Mutlak

    1] | 1 - (x/2) | = 3/4

    1 - (x/2) = 3/4
    4/4 - 3/4 = x/2
    x/2 = 1/4
    x = 2 . 1/4
    x = 1/2

    1 - (x/2) = -3/4
    4/4 + 3/4 = x/2
    x/2 = 7/4
    x = 2 . 7/4
    x = 7/2

    { 1/2, 7/2 }

    2] | x - 3 | >= 2

    x - 3 >= 2
    x >= 2 + 3
    x >= 5

    x - 3 <= -2
    x <= -2 + 3
    x <= 1

    x <= 1 atau x >= 5