Question

prove that root 0.9 is 0.9

Answer 1

hii frnd then ...see this...
this the proof...okay now fine..

Answer 2

√0•9 = 0•9
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If you have accessed to logarithm tables you would find it easier...

X^2 = 0•9
2 log ( x ) = log (0•9)
Log x = 1/2 log (9)-1
Log x= 1/2 ( 0•95424 - 1 )
x = 0•948683

Refer to the pic ..... If needed.
Hope it helps!