Question 89119
In place of x you simply put -3 and for the second part 5

{{{p(-3)=2(-3)^4+3(-3)^3-9(-3)^2+16(-3)+13}}}

So you get
{{{p(-3)=2x81+3(-27)-9(9)+(-48)+13}}}
{{{p(-3)=162+(-81)-(81)-48 +13}}}
{{{p(-3)=162-81-81-48 +13}}}

Pretty sure you can simplify this :)

Similary, you now replace the X with 5