Answer:
-2x^4+x^3-5x+8
Step-by-step explanation:
8-5x+x^3-2x^4
Write the polynomial from highest powers of x to lowest
-2x^4+x^3-5x+8
I believe it is 18 because GF is half the length of CG if CG equals 12 then GF equals 6 add them together and you get CF equals 18.
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