Question

Using the identity and find the value of (105)​

Answer 1

(105)² = (100 + 5 )²

by formula

(a+ b)² = a² + b² + 2ab

(100)² + (5) ² + 2×100 × 5

10000 + 25 + 1000

= 11025

hope this will help uhh.....