2 answers: choice B, choice F
Explanation:
The discriminant is
D = b^2 - 4ac
D = (-5)^2 - 4(3)(-1)
D = 25 + 12
D = 37
This means 37 is under the square root, and we know the answers are B and F due to this. Also note with these two answer choices, they are in the form [tex]\frac{-b \pm \sqrt{D}}{2a}[/tex] where...
- a = 3, so 2a = 2*3 = 6
- b = -5, so -b = -(-5) = 5
Choices A, C, D, and E can be eliminated as the discriminant for these is D = 13.
