I'm guessing you mean a^2? if so then,
a^2+28a+27=
(a+1)(a+27)
Answer: a relationship/connection between two variables, there are negative and positive correlations.
A slope is....
<span>a surface of which one end or side is at a higher level than another; a rising or falling surface.</span>
180 degrees - 116 degrees =64 degrees (angle PDC)
180 degrees - 64 degrees = 116 degrees (angle APD)