Determine which functions have two real number zeros by calculating the discriminant, b2 – 4ac. check all that apply. answer
f(x) = x2 + 6x + 8
g(x) = x2 + 4x + 8
h(x) = x2 – 12x + 32
k(x) = x2 + 4x – 1
p(x) = 5x2 + 5x + 4
t(x) = x2 – 2x – 15

By definition, we have that the discribinamte is given by:
 
 If the discriminant is greater than zero, then the function has two real roots.
 We then have to calculate the discriminant for each function:

 For
 
 The function has two real roots.

 For
 
 The function does not have two real roots.

 For
 
 The function has two real roots.

 For :
 
 The function has two real roots.

 For :
 
 The function does not have two real roots.

 For :
 
 The function has two real roots.

 
 functions have two real number zeros