Matematika

Pertanyaan

A. |5×-4|=6
B.|1-3×|=10

1 Jawaban

  • A. |5x - 4| = 6
    (5x - 4)² - 6² = 0
    (5x - 4 - 6)(5x - 4 + 6) = 0
    (5x - 10)(5x + 2) = 0
    x = 2 atau x = - 2/5

    B. |1 - 3x| = 10
    (1 - 3x)² - 10² = 0
    (1 - 3x + 10)(1 - 3x - 10) = 0
    (- 3x + 11)(- 3x - 9) = 0
    x = 11/3 atau x = - 3

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