Question

Given the functions f(x)=4x+8 and g(x)=2x-12 Find f(x)+g(x)

Answer 1

6x - 4

Explanation:

f(x) + g(x)

= 4x + 8 + 2x - 12 ← collect liketerms

= 6x - 4

Answer 2

6x - 4

Explanation:

`f(x)=4x+8,\ g(x)=2x-12\\\\f(x)+g(x)=\\\\\text{substitute}\\\\f(x)+g(x)=(4x+8)+(2x-12)=4x+8+2x-12\\\\\text{combine like terms}\\\\f(x)+g(x)=(4x+2x)+(8-12)=6x-4`