F(x)=−4x 2 +12x−9f, left parenthesis, x, right parenthesis, equals, minus, 4, x, squared, plus, 12, x, minus, 9 What is the value of the discriminant of fff?

Respuesta :

Answer:

The value of Discriminant is 0.

Step-by-step explanation:

Given,

[tex]f(x)=-4x^2+12x-9[/tex]

We need to find the value of discriminant.

And also we need to find the number of real zeros 'f(x)' have.

Solution,

We have given the quadratic equation;

[tex]f(x)=-4x^2+12x-9[/tex]

where  

 [tex]a = -4\\\\b = 10\\\\c = -8[/tex]

Now we will find the Discriminant.

Discriminant can be calculated by using the formula [tex]b^2 - 4ac[/tex].

Substituting the values we get;

[tex]D=b^2 - 4ac = 12^2-4\times(-4)\times(-9)=144-144 =0[/tex]

Hence the value of Discriminant is 0.