Question

Q.4 द्विघात समीकरण 2x2-3x+5= 0 का विविव्रतकर है
Discriminant of quadratic equation 2x2 - 3x + 5 = 0 is -
a) 31
b)-31
c) 36​

Answer 1

Answer:

$2 \times 2 - 3x + 5 = 0$

$- 31$

Answer 2

Given :   द्विघात समीकरण  2x²-3x+5= 0

quadratic equation  2x²-3x+5= 0

To Find :  विविव्रतकर

Discriminant of quadratic equation

a) 31

b)-31

c) 36​

Solution:

2x²-3x+5= 0

ax² + bx + c = 0

=> D = b² - 4ac

a = 2  ,  b = - 3 ,  c  = 5

D = (-3)²  - 4(2)(5)

=> D = 9 - 40

=> D = - 31

विविव्रतकर = - 31

Discriminant  = - 31

D < 0

=> मूलों की प्रकृति  

 काल्पनिक मूल  

मूल  = (- b ± √D)/2a

= ( -(-3) ± √- 31)/ 2(2)

=  ( 3 + i√31)/4

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