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OpenStudy (anonymous):
Given the following perfect square trinomial, fill in the missing term. (Do not type the variable in the blank.) 4x2 + ___x + 49
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Directrix (directrix):
28 as in 28x. Learn the format of the perfect square trinomial. In this problem: 4x^2 + 28x + 49 = (2x + 7) ^2
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