Matematika

Pertanyaan

Cara menyelesaikan soal |x+2| |x-2|=5?

1 Jawaban

  • (x+2)(x-2) = 5
    => x^2 - 2x + 2x -4 = 5
    => x^2 - 4 = 5
    => x^2 = 5 + 4
    => x^2 = 9
    => x = 3

    thx ^_^

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