Question

Question 3

State the value of the discriminant of 5x2 + 9x = 3.
a) 21
b) 12
c) 141
d) 5

Answer 1

D = 141

Explanation:

The given quadratic equation is

`5x^2+9x=3\\\\5x^2+9x-3=0`.

It is required to find the value of the discriminant. The value of discriminant of any quadratic equation is given by :

`D=b^2-4ac`

Here, a = 5, b = 9 and c = -3

On plugging all the values, we get :

`D=(9)^2-4* 5* (-3)\\\\D=141`

So, the value of discriminant for y is 141.