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7 November, 04:45

Which of the following represents the factorization of the binomial below?

X^2-81

A (x-9) (x-9)

B (x) (x-81)

C (x+9) (x+9)

D (x+9) (x-9)

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Answers (1)
  1. 7 November, 08:30
    0
    D

    Step-by-step explanation:

    x² - 81 ← is a difference of squares and factors in general as

    a² - b² = (a + b) (a - b)

    Here a = x and b = 9, thus

    x² - 81 = (x + 9) (x - 9) → D
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