Question

@Mathematics Using the discriminant, what values of c will make the quadratic y = 2x2 - 3x + c have one real solution?
A)c = -9/8
B)c = 9/8
C)(9/8, ∞)
D)[9/8, ∞)

Answer 1

b^2 - 4ac=0

(-3)^2-4(2)c=0

9-8c=0
c=9/8

Answer 2

discriminant for parabola
1) two real soloution if it is positive number
2) repeated root(one soloution) if it is 0
3) two complex root if it is negative