Question

evaluate 503 *497 using suitable identity

Answer 1

$= (500 + 3)(500 - 3)$

$= {500}^{2} - {3}^{2}$

$= 250000 - 9$

$= 249991$

Answer 2

Answer:

503×497. = (500+3) × (500-3). = {500]²- {3}² ( By a²-b²) = 250000-9. = 2,49,991 .