1). if the discriminant of a quadratic equation is 28 describe the roots a. 1 rational root b. 2 rational roots c. 2 irrational roots d. 2 complex roots 2). describe the roots of 5x^2 -2x+1=0 a. 1 rational root b. 2 rational roots c. 2 irrational roots d. 2 complex roots 3. what is the solution set for 3x^2 +9=5-4x? 4. what is the solution set for x^2-6x-5=0

1. Answer :B. 2 rational roots

Discriminant D >0 -----> 2 rational roots

Discriminant D =0 -----> 1 real root

Discriminant D <0 -----> 2 imaginary roots

D = 28 >0 So 2 rational roots

2. Answer : 2 complex roots

5x^2 -2x+1=0

Discriminant D =

D = -16 <0 so 2 complex roots

3. 3x^2 +9=5-4x

Now solve for x, use quadratic formula

x =

The roots are complex

Solution set is

4. x^2-6x-5=0

Solution set

where are the images of the functions i can only see the question you typed.

step-by-step explanation: