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18 January, 16:56

Factor 9x^2-49y^2 Enter your answer in the box

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Answers (2)
  1. 18 January, 17:54
    0
    (3x - 7y) (3x + 7y)

    Step-by-step explanation:

    9x² - 49y² ← is a difference of squares and factors in general as

    a² - b² = (a - b) (a + b)

    here 9x² = (3x) ² ⇒ a = 3x and 49y² = (7y) ⇒ b = 7y

    9x² - 49y²

    = (3x) ² - (7y) ² = (3x - 7y) (3x + 7y)
  2. 18 January, 18:15
    0
    (3x+7y) (3x-7y)
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