ok Harmendra,
Let me prove something else..
1 = SQRT(1)=SQRT(-1*-1)=SQRT(-1)*SQRT(-1)
now SQRT(-1)=i (imaginary number)
so RHS = i*i =-1
so 1 = -1, same way 3=2..lol...
basically u cannot factorize a positive real number into product of two -ve numbers inside a square root.. the value...