there is a mistake in 3rd last step
as square root has a +ve as well as -ve value
I mean square root of 4 is 2 but square root of 4 is also -2
If you want more explanation then reverse the action i.e (2)^2=4 and (-2)^2=4
So where is the negative root
Now the answer is
((5-9/2)^2)^1/2=5-9/2
and also
((5-9/2)^2)^1/2=-(5-9/2)
If we consider
-(5-9/2)+9/2
=-5+9/2+9/2
=-5+18/2
=-5+9
=4
I hope you understand it
nice
Nice
Bkwas
Nice work try some more such sharing
Please Explain it...
I did not undersand maths..
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