Question

310² by using identyties​

Answer 1

Identity-

(a+b)² = a²+b²+2ab

Here we can take 310 as (300+10).

So, a = 300 and b = 10.

According to condition,

(300+10)²

= 300²+10²+(2×300×10)

= 90000+100+6000

= 96100

Hence, 310² = 96100.

Hope this helps you to get to your answer.