using the following equation for parts a, b and c: 0 = x^2 - 4x + 3.

a) how many roots and what type of roots does this equation have? find the discriminant and use it to answer this question.

b) solve using the quadratic formula. (show all steps of work)

c) substitute each solution back into the equation and show that the solutions are correct! (show all steps of work)

(will try an give brainliest, if i can figure it out bc i'm still new to this app : d)