Question 1023486
Use simple qualitative knowledge about shape of polynomial functions.  Increases toward the left toward negative infinity and increases toward the right toward positive infinity because degree is EVEN.


Zeros at -3, -1, 2, 5.

Decreasing at -3; increasing at -1; decreasing at 2; increasing at 5.


Do you understand that {{{x-5}}} should NOT be a factor of P?
Recheck your synthetic divisions for factorization of P.