Help me with this please ​

So i have two answers this is Completing the Square:

(x+6)^2-36

and this is finding the perfect square trinomial:

x^2+12x+36

Hope this helps

hi friend

here is your answer

there are two angles that are alternate interior angle with angle 9

the angle 15 and angle 7 are alternate interior angle with angle 9.

hope it is for you so mark my answer as a brainliest