Answer:
26x-67-x²
Step-by-step explanation:
We are given

Expanding (x-8)²=x²-16x+64
10x-3-(x²-16x+64)
10x-3-x²+16x-64
26x-67-x²
The answer is 20 because all 4 sides would equal 5
Answer:
Hey there!
Area of a square: Length(Length)
324=Length^2
Length=18 ft.
Let me know if this helps :)