Question

What should be added to 419 to make it a perfect square?​

Answer 1

Answer:

22

Step-by-step explanation:

you know that 20² = 400 and 21² = 441

so 441 is closer to 419

 441-419 = 22

so add 22 to 419 to make it a perfect square.

(Tip: Just try to remember the 1 to 20 square numbers. Because its will be esy for you to get closest number for the given question)