Question

what least number must be added to 521 to make it a perfect square ?​

Answer 1

1. Question⇒ what least number must be added to 521 to make it a perfect square ?​

Step-by-step explanation:

• 22 x 22=484 which is <521  
• The next perfect square is 23 x 23=529  
• So 8 must be added with 521 to make it a perfect square