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

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middel688 middel688

13-02-2019

Answer: c

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