Answer:
-4^3-x^2-9
Step-by-step explanation:
This is not a polynomial expression. Fractions cannot be exponents in polynomial expressions. If you were to leave out x^5/9, the answer would be -4^3-x^2-9
I don't think this is right but 64 ft.
Pythagoras theorem. 20^2 times 18^2 = distance^2
x = 0