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Algebra 17 Online
OpenStudy (anonymous):

Using the completing-the-square method, rewrite f(x) = x2 + 4x − 1 in vertex form. A. f(x) = (x + 2)2 + 1 B. f(x) = (x + 2)2 C. f(x) = (x + 2)2 + 4 D. f(x) = (x + 2)2 − 5

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