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1 April, 22:30

Factor 4x2 - 16 using difference of two squares.

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Answers (2)
  1. 1 April, 22:57
    0
    4 (x+2) (x-2)

    Step-by-step explanation:

    4x^2-16

    4 (x^2-4)

    4 (x+2) (x-2)

    The difference of two squares formula is (a+b) (a-b), and it happens only when a^2 is minus b^2
  2. 2 April, 00:37
    0
    So, 4x^2 - 16 = (2x + 4) (2x - 4).

    Explanation:

    4x2^ - 16 is of the form a^2 - b^2 (where a = 2x, b = 4), and as per the identity:

    a^2 - b^2 = (a + b) (a - b)

    So, 4x^2 - 16 = (2x + 4) (2x - 4)
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