Matematika

Pertanyaan

selesaikan |x + 3| >2|x -3|

1 Jawaban

  • Nilai Mutlak

    | x + 3 | > 2|x - 3|
    |x + 3| > |2x - 6|
    (x + 3 + 2x - 6)(x + 3 - 2x + 6) > 0
    (3x - 3)( - x + 9) > 0
    3(x - 1) . -1(x - 9) > 0
    (x - 1)(x - 9) < 0

    1 < x < 9

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