Question

The discriminant of the equation x 2 + 9x – 13 = 0 is​

Answer 1

Answer:

d=sqrt((9)^2-4(1)(-13))

 =sqrt((81)+52)

 =sqrt(143)

 =11.98

Step-by-step explanation:

Answer 2

Answer:

discriminant = 133

Step-by-step explanation:

the eqn. can be rewritten as:

1.x^2 + 9x +(-13) = 0

Then a= 1, b= 9, c= -13

Therefore, discriminant = b^2 - 4 ac

= 9^2 - 4 × 1 × (-13)

= 81 + 52

= 133