Choose all of the zeroes of f(x). -3 with multiplicity 1
3 with multiplicity 1
O with multiplicity 1
O with multiplicity 3
O 3 with multiplicity 0
DO NE

Yea they are simplyfiy the ratios

Use pythagorean’s theorem and find the missing side lengths of the two smaller triangles and add them together
13^2 - 12^2 = 5
15^2 - 12^2 = 9
5+9 = 14
14 is the length of each side of the square
14^2 + 14^2 = 19.8
19.8 is the diagonal length of the inside if the square