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

(-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 (-2+√5), (-2-√5)

step-by-step explanation:

(s)he  is right it would be 5.5% because it is smaller than 15.5% or anything smaller than 15.5% in general

answer: this doesnt make any sense especially the photo.

step-by-step explanation: