This was a question on my quiz and my teacher took off a point because of this. What does he mean by integers? What would the correct equation be?

Integer: are the collection of whole numbers and negative numbers, without the fractional part.
Polynomial (with fraction):
[tex]x^2+4\frac{2}{5}x-3=0[/tex]Converting the mixed fraction to integer:
[tex]4\frac{2}{5}=\frac{22}{5}=4.4[/tex]Answer:
[tex]x^2+4.4x-3=0[/tex]