Question

. Using the formula (a + b)2 = (a2 + 2ab + b2), evaluate:
(i) (508)^2​

Answer 1

(a + b)^2 = (a^2 + 2ab + b^2)

Here, we can take 508 as (500+8).

So, (500+8)^2

= 500^2+(2×500×8)+8^2

= 250000+8000+64

= 258064

Hence, (508)^2 = 258064