Answer:
4a^2
Step-by-step explanation:

Therefore, the largest common factor is 4a^2. Hope this helps!
Perimeter is the total length of all sides. 72 divided by 4 equal sides of a square will give you the value of a. 72 divided by 4 is 18. The value of a is 18 yards.
The answer is 3x10^12 also can i get brainliest please??
Answer:
x = -3
Step-by-step explanation:
15 - 2x = -7x
add 2x
15 = -5x
divide by -5
-3 = x