Let fxx26 and hxx9 find the value of the following

Question

1) For the polynomial function ?f(x), find ?f(-?1)and and? f(2).

F(x)=3x²-12x+5

F(-1)=?

2) Let ?f(x)= -5x+2 and ?g(x)=x²+2

Find ?(f+?g)(x).... (f+g)(x)=?

3)Let ?f(x)= -3x-1 and ?g(x)=x²+ 1.

Find ?(f??g)(3)

Then ?(f??g)(3)= ?

4)Let f(x)=x²+6 and h(x)=x+9?, find the value of the following composite function.

?(f??h)(-3?)

(f??h)(-3?)=?