There is no definite way to answer this question without further, more detailed information. I am truly sorry I am unable to answer this with the information provided.
Answer:
the factored expression is
(d+6)(d+6) or (d+6)^2
Step-by-step explanation:
The answer would be 137 degrees because of supplementary angles of x and 43 degrees. Then the angle opposite of x (z) is the same as x.