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1 solution
1 6 x 8 + 3 2 x 6 y + 2 4 x 4 y 2 + 4 x 4 + 8 x 2 y 3 + y 4 = ( 1 6 x 8 + 3 2 x 6 y + 2 4 x 4 y 2 + 8 x 2 y 3 + y 4 ) + 4 x 4 =
= ( 2 x 2 + y 4 ) 4 + 4 x 4 = ( ( 2 x 2 + y ) 2 + 2 ( 2 x 2 + y ) x + 2 x 2 ) ( ( 2 x 2 + y ) 2 − 2 ( 2 x 2 + y ) x + 2 x 2 )