Answer:
x = 4, y = 2
Step-by-step explanation:
Given quadrilateral is a parallelogram. Diagonals of a parallelogram bisects each other.

15)
4(a+b) + 12
= 4a + 4b + 12
= 4(a +b + 3)
answer is
b) 4(a +b + 3)
16)
x - 4(2x + 2)
= x - 8x - 8
= -7x - 8
answer
-7x - 8
It is A. x = 2√3, y = 4√3
C is the answer I think if it’s not I’m sorry