MAKE IT A PERFECT SQUARE

Algebra Level pending

The sum of possible integral values of a such that quadratic polynomial [x + a] [x +2013] + 1 is a perfect square is


The answer is 4026.

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1 solution

Rohit Kumar
Jan 7, 2015

let -

( x + a ) ( x + 2013 ) = k 2 1 (x + a)(x + 2013) = k^{2} - 1

then

( x + a ) ( x + 2013 ) = ( k + 1 ) ( k 1 ) (x + a)(x + 2013) = (k + 1)(k - 1)

so, the difference between ( x + a ) (x + a) and ( x + 2013 ) (x + 2013) should be 2 2 .

so, a = 2011 , 2015 a = 2011, 2015 .

answer = 4026 4026

good boy!!!!!!!

divyansh tripathi - 6 years, 5 months ago

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