Question 603883
Hello, 
This {{{ x^2-2x-3= sqrt( 4 ) }}} can be written as:
x^2-2x-3= 2
Subtract 2 from both sides:
x^2-2x-5=0
From here you can plug this into the quadractic formula to find the answer. 
I'll let you do that. 
RJ
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