Answers

2015-10-25T00:30:46+05:30
They have no real roots. They are imaginary roots.
  Because b square minus 4ac is less than zero.
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2015-10-25T01:10:45+05:30
7x² + 5x + 11 = 0

using

D = b² - 4ac

D = 25 - 4× 7 × 11

D =25 - 308

D = -283

since D < 0

so the roots will be imaginary .
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