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Mathematics 13 Online
OpenStudy (anonymous):

http://prntscr.com/8ncg4q

OpenStudy (anonymous):

@Directrix

Directrix (directrix):

Have you tried any of these options? To test option a, factor x^2 + 2x + 1 = 0 to get (x + 1) * (x + 1) = 0 with x turning out to be -1 which is real. So, option a is out of the running as the answer.

Directrix (directrix):

Question: Have you studied yet about the discriminant of a quadratic equation? @ineedhelp178

OpenStudy (jhannybean):

You can find c by completing the square.

Directrix (directrix):

This chart may help. @ineedhelp178 You are exprected to participate in the solution of the problem.

OpenStudy (anonymous):

is my answer 3?

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