Solve 2x2 + 20x + 8 = 0 by completing the square. Question 12 options:

x = 5 + 17−−√, x = 5 –17−−√

x = 5 + 21−−√, x = 5 –21−−√

x = –5 + 17−−√, x = –5 –17−−√

x = –5 + 21−−√, x = –5 –21−−√