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Algebra 15 Online
OpenStudy (anonymous):

Type the correct answer in each box. Use numerals instead of words. If necessary, use / for the fraction bar(s). A parabola is given by the equation y = x2 + 4x + 4. The vertex of the parabola is . The focus of the parabola is . The directrix of the parabola is given by the equation y = . Note: Separate coordinates inside parentheses with a comma.

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