p²-12p-49=-103
add 49 to both sides
p²-12p=-54
take 1/2 of the linear coefient and square it
-12 is the linear coefitnt so -12/2=-6, (-6)²=36
add 36 to both sides
p²-12p+36=-18
factor perfect square trinomial
(p-6)²=-18
square root both sides
no solution because we can't squaer anything and get a negative
