Question 456328
x^2-2x-3= sqrt( 4 )
x^2-2x-3=2
x^2-2x  =5
x^2-2x+1=5+1 completing the square.
(x-1)^2=6
x-1=+-sqrt(6)
x=1+sqrt(6), x=1-sqrt(6)
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Ed