Use the discriminate to determine the number of solutions for the equation 9x2+6-1?

Question

The problem is 9x(squared) +6x = -1

The choices for the answer are:

1
2
3
none

Answer 1

The discriminant is b^2 - 4ac. If it looks familiar, it's in the quadratic formula.

The quadratic is in the form ax^2 + bx + c. Plug in your values for a, b, and c.

If your result is:
....positive, there are two real solutions
...zero, there is one real solution (that is repeated)
...negative, there are two imaginary solutions.

Hope that helped.

Answer 2

Um no, there should be exactly 1 answer, a double root. 9x^2+6+1 factors into (3x+1)(3x+1). Since that product is 0. 3x+1 is 0, x = -1/3. There is only one answer.

Or to do it the waay you want, 6^2 - 9*1*4 = 0, so there is one solution.

Answer 3

6^2-4(9)(1)
36-36
0

Answer 4

A:None