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16 December, 21:23

Determine whether the polynomial is a difference of squares and if it is, factor it.

y2 - 25

A. Is not a difference of squares

B. Is a difference of squares: (y - 5) 2

C. Is a difference of squares: (y + 5) (y - 5)

D. Is a difference of squares: (y + 5) 2

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Answers (1)
  1. 16 December, 21:38
    0
    The answer is C

    y² - 25

    = y² - 5²

    = (y + 5) (y - 5) which is a difference of two squares
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