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8 March, 14:39

Which of the following is the complete factorization of 25a 2-100

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  1. 8 March, 17:50
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    25 (a-2) (a+2)

    Step-by-step explanation:

    25a^2 - 100

    We can factor out 25

    25 (a^2 - 4)

    a^2 - 4 is the difference of squares a^2-b^2 = (a-b) (a+b)

    where a = a and b=2

    a^2 - 4 = (a-2) (a+2)

    25a^2 - 100 = 25 (a-2) (a+2)
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