Question

If f(x)=x^2+1 and g(x)=x-4, which value is equivalent to (f*g)(10)?

Answer 1

f*g(x)=(x^2+1)(x-4)
f*g(x)=x^3+x-4-4x^2
Then plug in x
(10)^3+(10)-4-4(10)^2
1000+10-4-4*100
1006-400
606

Answer 2

(F*g)(10)
F(10)=10^2+1 and g(10)=10-4
100+1 and 6
F(10)=101
G(10)=6
(F*g)= 101*6
(f*g)=606