(a) Complete the square by writing $x^{2}-16x-17$ in the form $(x-h)^2+k$. Note: the numbers $h$ and $k$ can be positive or negative.

$x^{2}-16x-17 = \big($ $\big)^2 +$ help (formulas)

(b) Solve the equation $x^{2}-16x-17 = 0$ by completing the square or using the quadratic formula. If there is more than one correct answer, enter your answers as a comma separated list. If there are no real solutions, enter NONE.

$x$ = help (numbers)