Algebra help
posted by Aisumi on .
Solve by completing the square x2  2x  5 = 0. Help please
a)1 plus or minus√6
b)1 plus or minus√6
c)3 plus or minus 2√6
d)3 plus or minus 2√6

x^22x + ...=5
half of 2,then square it.
x^22x+1=5+1
(x1)^2=(sqrt6)^2
you finish. 
i don't know how?(:<

(x1)^2=sqrt6^2
Take the square root of both sides.
x1=sqrt6..
you have to know how to finish from here