For which positive integers n is x + 3 a factor of xº + 3?

If f(x)=2x^6+x^2+2 then what is the remainder when f(x)is divided by x+2

Alicense plate is to consist of 44 digits followed by 55 uppercase letters. determine the number of different license plates possible if the first and second digits must be? odd, and repetition is not permitted.

For which pair of functions is (gof)(a)=|a|-2?