find the square root of 121 & 169 by repeated subtraction method
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square root of 121 by repeated subtraction method.
1.) 121-1=120
2.) 120-3=117
3.) 117-5=112
4.) 112-7=105
5.) 105-9=96
6.) 96-11=85
7.) 85-13=72
8.) 72-15=57
9.) 57-17=40
10.) 40-19=21
11.) 21-21=0
total 11 step are there to reach zero .
so square root of 121 is 11.
similarly,
for 169 we have to do so
but we will not get zero in any step.
so square root of 169 is not possible for any natural number.
1.) 121-1=120
2.) 120-3=117
3.) 117-5=112
4.) 112-7=105
5.) 105-9=96
6.) 96-11=85
7.) 85-13=72
8.) 72-15=57
9.) 57-17=40
10.) 40-19=21
11.) 21-21=0
total 11 step are there to reach zero .
so square root of 121 is 11.
similarly,
for 169 we have to do so
but we will not get zero in any step.
so square root of 169 is not possible for any natural number.
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