Question

Find the least number that should be added to 80000 to get a perfect square.write down its square root

Answer 1

Answer: 89

Step-by-step explanation:  Beginners can can start with 100^2=10 000

Then 200^2=40 000. now 300^2 = 90 000. So by trial & error method we will see 250^2= 62500,  275^2 = 75 625 etc.

going up 280^2 = 78 400. 281^2 = 78 961.

282^2 = 79 524.

So finally 283^2 = 80 089.

now least no. to add = 80089-80000=89.