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Mathematics 10 Online
OpenStudy (anonymous):

solve x^2+2x-4=0

OpenStudy (anonymous):

complete the square x^2 + 2x +1 = 4 =1 (x+1)^2 = 5 x=+ or -(sqrt(5))-5

OpenStudy (anonymous):

\[x= \pm \sqrt{5} -1\]

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