SOLUTION: Find the roots of the quadratic equations using the quadratic formula. Express the roots, if they are not rational, in simplest radical form. x2 - 4x - 2 = 0

Algebra ->  Quadratic Equations and Parabolas  -> Quadratic Equations Lessons  -> Quadratic Equation Lesson -> SOLUTION: Find the roots of the quadratic equations using the quadratic formula. Express the roots, if they are not rational, in simplest radical form. x2 - 4x - 2 = 0      Log On


   

Question 44288: Find the roots of the quadratic equations using the quadratic formula. Express the roots, if they are not rational, in simplest radical form.
x2 - 4x - 2 = 0
Answer by fractalier(6550) About Me  (Show Source):
You can put this solution on YOUR website!
From x^2 - 4x - 2 = 0, we have
x = (4 ± sqrt(16 + 8)) / 2
x = (4 ± sqrt(24)) / 2
x = (4 ± 2sqrt(6)) / 2
x = 2 ± sqrt(6)