Question

what is the solution set of the quadratic equation 9x^2 + 7x + 2=0?

Answer 1

it has imaginory roots..

Answer 2

thx and how do you figure that out

Answer 3

b^2 - 4ac is negative

Answer 4

the discriminant 7^2-4*9*2=49-72<0...

Answer 5

for a given quadratic equation, ax^2+bx+c
find the determinant D=sqrt(b^2-4ac)
if D<0 then the equation has a imaginary set of roots.

Answer 6

sorry D is discriminant ! :|