Plz answer these. I REALLY NEED HELP P(x)=3x3+9x2-5x-1 D(x)=x+4

P(x)= -x3-2x+6 D(x)=x-1

Find 3x2+xx+1

Given x4+3x3-16x2-27x+63, show if x+3 is a factor of the quartic polynomial.

Using synthetic substitution, evaluate f(-7) if f(x)=5x4+30x3-40x2+36x+14.

If f(x)=x3-x2-11x+6 and x+2 is a given factor of the cubic polynomial, rewrite f(x) in factored form.

Use the given graph of f(x)=5x3-7x2-49x+51 to find a possible linear factor of f(x). Then use it with synthetic division to completely factor f(x).

If f(x)=(2x2-3+11)(x+4)-41, then -41 is the remainder of f(x) divided by (x+4).
True or False? Explain.

There exists a polynomial function f(x) such that f(-5)=0. For each statement say if the statement is true or false.

x-5 is a factor of f(x).

x= -5 is a zero of f(x).

x+5 is a factor of f(x).

-5 is an x-intercept of f(x).

f(x)(x+5) has a remainder of zero.