Question 1083424

{{{f(x)=x+6}}}
{{{g(x)=4x+6}}}

write the expressions for:

 {{{(f-g)(x)= x+6-(4x+6)=x+6-4x-6=-3x}}}

{{{(f*g)(x)= (x+6)(4x+6)=4x^2+6x+24x+36=4x^2+30x+36}}}

evaluate: 

{{{(f+g)(4)=(x+6)+(4x+6)=(4+6)+(4*4+6)=10+22=32}}}