Set 2: Quadratic Equations

Choice A is correct. Choice A is the correct answer. 1. Identify: $a=2, b=1, c=-3$. 2. Discriminant: $1^2 - 4(2)(-3) = 1 + 24 = 25$. 3. Formula: $x = \frac{-1 \pm \sqrt{25}}{2(2)} = \frac{-1 \pm 5}{4}$. 4. Case 1: $(-1 + 5)/4 = 4/4 = 1$. 5. Case 2: $(-1 - 5)/4 = -6/4 = -1.5$. Choice B is incorrect because of sign errors ($x = -1, 1.5$). Choice C is incorrect because it ignores the denominator. Choice D is incorrect because it guesses integers without solving.