Question

Calculate the discriminant to determine the number of real roots.

y = x^2 + 3x + 9


How many real roots does the equation have?

Answer 1

know how to calculate the discriminant ?

Answer 2

I think so...

Answer 3

Compare
\(y= x^2 + 3x + 9\) with
\(y=ax^2+bx+c\)

find a,b,c

Answer 4

then your discriminant is just
\(\Large D = {b^2-4ac}\)

Answer 5

Sorry, I don't get it.

Answer 6

did you get how to find a,b,c values ?

Answer 7

No

Answer 8

Shouldn't It be a=1 b=3 c=9

Answer 9

did you get now ?