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28 June, 09:32

Find the product. (3p - 7) (3p + 7)

A. 9p^2 + 49

B. 9p^2 - 42p - 49

C. 9p^2 + 42p + 49

D. 9p^2 - 49

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Answers (1)
  1. 28 June, 09:48
    0
    (3p - 7) (3p + 7) =

    (3p * 3p) + (3p * 7) + (-7 * 3p) + (-7 * 7) =

    9p^2 + 21p - 21p - 49

    = 9p^2 - 49

    Therefore, answer would be D.
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