Answer:
S=a^2
Step-by-step explanation:
Note all sides of a square are equal, and the formula for finding the area is length x width of which the length=a and the with =a. So S=a^2.
4x + 15
24 - 8x - 9 + 12x
Add or subtract the common variables
answer = 2
You can just use a calculator unless you need to show your work
