4) What is the value of discriminant for the quadratic equation X2 – 2X - 3
= 0?
A) -16. B) 16 C) 8 D) 4
Answers
Answered by
20
Answer:
option (B) 16
Step-by-step explanation:
Given :
The quadratic equation : x² – 2x – 3
To find :
the value of discriminant
Solution :
For the quadratic equation of the form ax² + bx + c, the value of discriminant is given by
D = b² – 4ac
For the given Quadratic equation,
a = 1
b = –2
c = –3
Discriminant, D = (–2)² – 4(1)(–3)
D = 4 + 12
D = 16
Therefore, correct option is (B)
________________________
#Know more :
- The nature of roots is based on the value of discriminant.
D > 0 ; the quadratic equation has real and distinct roots
D = 0 ; the quadratic equation has real and equal roots
D < 0 ; the quadratic equation has complex roots
Similar questions