The anwser is A. (p + 8) (p - 3)
Answer:
Option A. 
Step-by-step explanation:
we know that
The combined area of the 3 windowpanes and frame is equal to

using a graphing tool to solve the quadratic equation
The solution is 
see the attached figure
If lines a and b are parallel, then aº = 79º = dº = bº.
X=10
This is the answer to sol e for your equation you are asking