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Question
The value of the discriminant of the equation x2 + 6x – 15 = 0 is ______.
Options
– 96
96
24
– 24
Solution
The value of the discriminant of the equation x2 + 6x – 15 = 0 is 96.
Explanation:
Given quadratic equation is, x2 + 6x – 15 = 0
Compare the given quadratic equation with ax2 + bx + c = 0, we get
a = 1, b = 6 and c = – 15
We know,
Discriminant, D = b2 – 4ac
= (6)2 – 4 × 1(– 15)
= 36 + 60
= 96
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