Question

Calculate the discriminant to determine the number of real roots.

y = x2 + 3x + 9

How many real roots does the equation have?
one real root
two real roots
no real roots
no solution

Answer 1

For 2 real roots b^2 - 4ac > 0
for one real root b^2 - 4ac = 0
for b^2 - 4ac < 0 no real roots

Answer 2

so c

Answer 3

yes the discriminant = 9 - 36 = -27 so no real roots

Answer 4

good job