Square root finding

#1

here why it is done ans=ans-inc i cant understand . pls explain

#2

and why inc =inc/10 has done

#3

@ssmit_joshi
its explained from start to 5.40,
when 4*4 is not less than equal 10 we do ans-1 ie ans - inc and next time we do same thing for points so inc/=10 , watch the video start sir dry run it for 3

#4

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