Discuss the nature of the roots of the following quadratic equations:
(i) x² – 4x – 1 = 0
(ii) 3x² – 2x + 
= 0
(iii) 3x² – 4√3x + 4 = 0
(iv) x² – 
+ 4 = 0
(v) – 2x² + x + 1 = 0
(vi) 2√3x² – 5x + √3 = 0
Solution:
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