Question

1. Find the discriminant of the following quadratic equations and hence find the nature
of roots :
(i) 3x2 – 5x – 2 = 0
(iii) 16x2 – 40x + 25 = 0
(ii) 2x2 – 3x + 5 = 0
(iv) 2x2 + 15x + 30 = 0.
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Answer 1

Answer:

1) 1or 2/3

2) 0 ;0

3) 2.5 ;0.5

4) -225/4+√-15/4 ; -225/4-√-15/4