masonorourke masonorourke 13-02-2019 Mathematics contestada slove x^2 + 9 + 9 = 0. A. -9 + 3 square root 5 / 2 B. 9 + 3 square root 5 / 2 C. -9 + square root 117 / 2 D. 9 + square root 117 / 2
