Answer:
Step-by-step explanation:
when x=4
area=4²+14×4+c=16+56+c=72+c
8²=64
9²=81
72+c=81
c=81-72=9
area=81 units²
length of each side=√81=9 units
A^2 -121 = a^2 -11^2 = (a-11)(a+11)
so the second choice is right sure
X=4
-4x4=-16
-16-2=-18
-18/3=-6
Answer:
its b
Step-by-step explanation:
Cannot be determined as there isn’t an angle
