error in trendline formula

Hi, I have looked in the forum for similar errors, but I still can't understand how to fix this.
Excel gave me this order 5 polynomial function:
y = 9E-08x4 - 0.0002x3 + 0.2502x2 - 113.38x + 19102
but it returns wrong answers, for example for x=603 , it shows me 9756.622 instead of 0.
sample attached