Solve for x x^2 + 6x + 1 = 0

x = -.1715 ≈ - .172    or x = -5.83

Step-by-step explanation:

x² + 6x + 1 = 0

x² + 6x = -1

Complete the square   Add to both sides (1/2 of the x-term, then square it.)

x² + 6x + 9  = -1 + 9

(x + 3)(x + 3) = 8

(x + 3)² = 8

 =

 x + 3 = ±  

  x = -3 ±

   x = -3 +   or x = -3 -

   x = -.1715 ≈ - .172    or x = -5.83

answer: 230 miles ( vote ! )

step-by-step explanation:

180.39 minus 17.99 equals 162.4

then divide 162.4 by .80 to get 230

step-by-step explanation:

circumference divided by 3.141592654 then timesthe radius twice