How to find square root? Plz tell me a simple way to do it!!
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For example: 25
5 | 25
5 | 5
| 1
So,25=5×5.
Now ,you have make a pair of same prime numbers, like 5×5 is one group,and then take one prime number out of it and that is your answer.From 5×5 take one 5 out and then that is your asnwer.
So √25=5
One more example.
400
2 | 400
2 | 200
2 | 100
5 | 50
5 | 10
2 | 2
| 1
400=2×2×2×5×5×2
Like I said, make pairs of same prime numbers together.
So, 400=2×2×2×2×5×5
After making groups, take one prime number out of each group and multiply them.
2×2×5
20
So √400=20
This can be done only in the case of perfect squares, if one number is left out,then simply understand that its square root is in decimals