PLEASE HELP!!! 1.4 - 5.5 -1.73 + 1.8 - 109= ?A) -5.12B) -8.72C) -1.66D) 5.12
1 answer:
You might be interested in
Answer:
Step-by-step explanation:
The quadratic formula is:
The discriminant of a quadratic is just the expression under the square root, or . This can tell us the number of solutions a quadratic has.
If the discriminant is:
- Positive = 2 real solutions
- Equal to Zero = 1 real double/repeated solution
- Negative = 0 real solutions, but 2 imaginary solutions
Our quadratic equation has a discriminant of 5, which is positive. Therefore, it has 2 real solutions.