By completing the square, find the solutions of x which satisfy the equation x^2+14x-1=0

Using the general complete the square formula, where x²+bx+c=0 becomes (a+b/2)²+b²+c=0, we get (x+7)²-7²-1=0 This can be rearranged to show that (x+7)²=50 by taking the square root of both sides we find that x+7=+ or - √50 Hence the final solutions are x=-7 +√50 and x=-7-√50