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18 July, 09:33

If k = (n + 2) (n - 2), where n is an integer greater than 2, what is the value of k? (1) k is the product of two primes. (2) k < 100

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  1. 18 July, 09:46
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    The answer is k=77

    Step-by-step explanation:

    It is given that n is an integer and greater than 2. Let us simplify k = (n + 2) (n - 2) to k=n^2-4.

    In (1) it is stated that k is the product of two primes and in (2) it is stated that k<100. To solve the question we need to consider both cases (1) and (2).

    Let say n=9 then k=n^2-4 becomes k=81-4=77. Well, 77 is the product of two prime numbers 7 and 11 (77=7*11). The answer is k=77
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