Which of the following is the discriminant of the polynomial below?

x^2+6x+8

The standard form of a quadratic equation is,

ax² + bx + c = 0.

And the formula to find the discriminant is b² - 4ac.

Hence, first step is to compare the given equation with this equation to get the value of a, b and c.

After comparing the equations we will get a = 1, b = 6 and c = 8.

So, discriminant = b² - 4ac

=6²-4 (1) (8)

= 36 - 32

= 4

So, discriminant of the given equation is 4.

Hope this heps you!