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6 August, 06:49

Which polynomial can be simplified to a difference of squares?

a. 10a2 + 3a - 3a - 16

b. 16a2 - 4a + 4a - 1

c. 25a2 + 6a - 6a + 36

d. 24a2 - 9a + 9a + 4

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Answers (1)
  1. 6 August, 07:10
    0
    The answer is b.

    Explanation: In the sum (b), - 4a+4a gives a sum of zero. This leaves us with 16a2-1. Since 16a2 is a square of 4a and 1 is a square of 1, then 16a2-1 is a difference of squares.
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