Question 1019270
{{{P(-3)=-(-3)^4-3(-3)^3+4(-3)^2-6}}}
{{{P(-3)=-81+3(27)+4(9)-6}}}
{{{P(-3)=30}}}
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Quotient?
Remainder?
You're not dividing P(x) by another polynomial. 
Please repost if you need.