A^2-b^2=(a+b)(a-b)
1: x^2-4=(x+2)(x-2)
2: (x+8)(x-8)
3: (x+10)(x-10)
4: (x+14)(x-14)
The perimeter represents the amount of wood needed and the area represents the amount of class needed.
so 2*(2/3) + 2(2) = 4/3 + 4= 4 4/3 or 5 1/3 wood is needed for the border.
for the mirror, you will need the area= 4/3 * 2 = 8/3 sq yds or 2 2/3 sq yards is needed.
Vertex is

and minimum value of f(x) is 12
Hope this helps
Answer:
I think it's 9.
Step-by-step explanation:
50% of 18 is 9.
40% of 25 is 10 if that helps you.
I don't know if I'm correct but this might help you
Mel is 21......................................