Answer:
[tex](F+G)x=2x^2+4x-16[/tex]
[tex]Domain[/tex] [tex]=(-\infty,\infty)[/tex]
Step-by-step explanation:
Given that
[tex]F(x)=2x^2+3x-15[/tex]
and [tex]G(x)=x-1[/tex]
then [tex](F+G)x = F(x)+G(x)[/tex]
[tex]=(2x^2+3x-15)+(x-1)\\=2x^2+3x-15+x-1\\\\(F+G)x=2x^2+4x-16[/tex]
Domain
since it is a polynomial of degree [tex]2[/tex], the domain will be whole real line
[tex]domain[/tex] [tex]=(-\infty,\infty)[/tex]
