checor28
checor28 checor28
  • 04-06-2020
  • Mathematics
contestada

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

Respuesta :

JayJayTheHelper JayJayTheHelper
  • 04-06-2020

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)

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