Question

What is the formulae used if you want to find a number is a perfect square or not?​

Answer 1

Answer:

by using prime factorisation

Step-by-step explanation:

• for example if we want to find perfect square of 81.
• first see whether it can divisible by 2.
• If not it will divisible by 3.
• 81/3=27/3=9/3=3/3=1.
• hence there are 2 pairs so it is a perfect square