Question

evaluate:-- (503)2 ---(497)2​

Answer 1

Answer:

Step-by-step explanation:

(503)^2 ---(497)^2

= (500+3) (500-3)

=(500)^2 - (3)^2

= 250000-9

= 249991

we have to use (a+b)(a-b) = a^2-b^2