Solve 2x2 + 12x - 14 = 0 by completing the square, options: A. 2 (x + 6) 2 = 26; x = - 6 + square root 13, x = - 6 - square root 13 B. 2 (x + 6) 2 = 20; x = - 6 + square root 20, x = - 6 - square root 20 C. 2 (x + 3) 2 = 32; x = 1, x = - 7 D.
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