Question

Answer 1

a: A(x)=x^3+2x^2-5x-7

B(x)=x^3-5x+11

b: A(2)=8+2*4-5*2-7=8+8-10-7=-1

B(-1)=-1+5+11=16-1=15

c: F(x)=A(x)+B(x)

=x^3+2x^2-5x-6+x^3-5x+11

=2x^3+2x^2-10x+5

d: G(x)=A(x)-2B(x)

=x^3+2x^2-5x-7-2x^3+10x-22

=-x^3+2x^2+5x-29