Question

Using quadratic formula , give your answer as specified
x2+4x-1=0 (exact root)

Answer 1

Answer: (-2+√5), (-2-√5)

Explanation:

1. Reference the formula: [(-b±(√b^2-4ac))/2a]

2. Plug in the values from the equation: [(-4±(√16+4))/2]

3. Simplify: [(-4±(√20))/2]

4. Simplify the root: [(-4±(2√5))/2]

5. Simplify the fraction: [-2±√5]

6. There's your answer: (-2+√5), (-2-√5)