(i)25a² + 12 = 25a² + 0a + 12 = 5a(5a + 0) + 12 = (5a + 0)(5a + 12)The possible values of length=(5a + 12) and breadth=(5a)
(ii)35y² + 13y + 4 = 35y² + 28y + 7y + 4 = 7y(5y+4) + 1(5y+4) = (5y+4)(7y + 1)The possible values of length=(7y + 1) and breadth=(5y+4).