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Grade: 12th pass 

                        
why underroot -a multiply by underroot -b is not equal ounderroot ab.
6 years ago

Answers : (1)

Rinkoo Gupta
askIITians Faculty
80 Points 
							sqrt(-a)=sqrt(-1)sqrt(a)=isqrt(a)
sqrt(-b)=sqrt(-1).sqrt(b)=isqrt(b)
sqrt(-a).sqrt(-b)=(ia).(ib)=i^2.ab= -ab
Thanks & Regards
Rinkoo Gupta
AskIITians Faculty
6 years ago
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