Using quadratic formula, give your answer as specified

x2+4x-1=0 (exact root)

Answer: (-2+√5), (-2-√5)

Step-by-step 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)