What is the value of the discriminant $f(x)= 2x^2 + 8x +3$ ?

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Answer 1 · 2018-04-24T23:48:22

$40$

The discriminant is the value under the radical in the Quadratic Formula, equal to

$b^2-4ac$

Our quadratic is in the form $ax^2+bx+c$ , so we know

$a=2$

$b=8$

$c=3$

We plug the values into our discriminant expression to get

$8^2-4(2)(3)$

$=>64-24=color(blue)(40)$

Hope this helps!

What is the value of the discriminant f(x)= 2x^2 + 8x +3f(x)= 2x^2 + 8x +3?