Question

using the identity (a-b)² = a² - 2ab + b² find the square of the following number 249

Answer 1

Answer:

(250 - 1)²

= 250² - 2(250)(1) + 1²

= 62500 - 500 + 1

= 62000 + 1

= 62001 Ans

Hope this helps ☺️