Question

Calculate the discriminant to determine the number of real roots.

Y=x^2+3x+9
How many real roots does the equation have?
A) no real roots
B) no solution to the equation
C) one real root
D) two real roots

Answer 1

D = b^2 - 4ac = 3^2 - 4*1*9
= 9 - 36 = -27

because its negative there are no real roots

just 2 imaginary roots