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urbanderivative
 2 years ago
prove that the square of any integer a is either of the form 3k or 3k+1 for some integer k. [hint by division algorithm, a must be of the form 2q, 3q +1, or 3q+2]
urbanderivative
 2 years ago
prove that the square of any integer a is either of the form 3k or 3k+1 for some integer k. [hint by division algorithm, a must be of the form 2q, 3q +1, or 3q+2]

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matricked
 2 years ago
Best ResponseYou've already chosen the best response.1any integer can be written as 3q, 3q +1, or 3q+2....q being an integer case 1 when n=3q clearly n^2=9q^2=3(3q^2)

matricked
 2 years ago
Best ResponseYou've already chosen the best response.1when n=3q +1 n^2=9q^2+6q+1=3(3q^2+2q)+1

matricked
 2 years ago
Best ResponseYou've already chosen the best response.1when n=3q +2 n^2=9q^2+12q+4=3(3q^2+4q+1)+1 (form 3k+1)

matricked
 2 years ago
Best ResponseYou've already chosen the best response.1the square of any integer a is either of the form 3k or 3k+1
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