7. Use the discriminant to determine the number of real solutions of the equation. 5x^2- 3x+1=0 a. 1
b. 2
c. None
d. Not enough information.

c. None

Step-by-step explanation:

5x²- 3x+1=0         ax² + b + c = 0

discriminant: b² - 4ac = (-3)² - 4*5 * 1 = 9 - 20 = - 11   (negative)

discriminant < 0       2 imaginary solutions

c. None

Step-by-step explanation:

b^2-4ac= (-3)^2 - 4×5×1= 9-20=-11

As the discriminant is negative, there will be no real number.