1. ## Solve

Solved

2. Originally Posted by Insignia21
If f(x)=3x^2 -5 and g(x)=x-6 find (f+g)(-2)
This is the same as saying evaluate $f\!\left(-2\right)+g\!\left(-2\right)$

Simply evaluate both of your functions at -2 and add the results together.

Can you try to take it from here?

3. Originally Posted by Insignia21
If f(x)=3x^2 -5 and g(x)=x-6 find (f+g)(-2)
Hello :

coclusion :

4. Originally Posted by Insignia21
If f(x)=3x^2 -5 and g(x)=x-6 find (f+g)(-2)
$(f + g)(x) = f(x) + g(x)$

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

$= 3x^2 + x - 11$

$(f + g)(-2) = 3(-2)^2 - 2 - 11$

$= 12 - 13$

$= -1$