(-(x - three)^ two /(x^ two - six *x + thirteen) + one)/sqrt(x^ two - six *x + thirteen) = zero
( minus (x minus 3) squared divide by (x squared minus 6 multiply by x plus 13) plus 1) divide by square root of (x squared minus 6 multiply by x plus 13) equally 0
( minus (x minus three) to the power of two divide by (x to the power of two minus six multiply by x plus thirteen) plus one) divide by square root of (x to the power of two minus six multiply by x plus thirteen) equally zero