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

answer

a,b, and d

explanation

a reflection angle is more than

but less than;

an angle that measures

is a reflex angle.(true)

an angle that measures less than

is acute.(true)

provided we are considering angles greater or equal to zero.

an acute angle lies in the range.

an obtuse angle is less than 180° but more than 90°

an angle that measures 300° is obtuse (false)

an angle that measures 65° is an acute angle.(true)

u bout ugly as   a mf

step-by-step explanation: lol