Answer:
its answer is -x^3+x^2+3x-1
Step-by-step explanation:
f(x) +g(x)
= 8-4x-x^3+x^2+7x-9
= -x^3+x^2+3x-1
Answer:
The value of f(x)+g(x) is [tex]-x^3+x^2+3x-1[/tex].
Step-by-step explanation:
The given functions are
[tex]f(x)=8-4x-x^3[/tex]
[tex]g(x)=x^2+7x-9[/tex]
We have to find the value of f(x)+g(x).
[tex]f(x)+g(x)=(8-4x-x^3)+(x^2+7x-9)[/tex]
[tex]f(x)+g(x)=8-4x-x^3+x^2+7x-9[/tex]
On combining like terms we get
[tex]f(x)+g(x)=-x^3+x^2+(-4x+7x)+(8-9)[/tex]
On simplification we get
[tex]f(x)+g(x)=-x^3+x^2+3x-1[/tex]
Therefore the value of f(x)+g(x) is [tex]-x^3+x^2+3x-1[/tex].
