Question

15) f(x) = 3x + 5

g(x)=-4x + 3
Find f(x) + g(x)
17) f(x) = 2x +4
g(x)= x - 5
Find f(x) - g(x)
how do u solve these equations?​

Answer 1

`</p><p>f(x)=3x+5 \\</p><p>g(x)=-4x+3 \\</p><p>(f+g)(x)=f(x)+g(x)=(3x+5)+(-4x+3) \\</p><p>3x+5-4x+3=\boxed{-x+8} \\ \\</p><p>f(x)=2x+4 \\</p><p>g(x)=x-5 \\</p><p>(f-g)(x)=f(x)-g(x)=(2x+4)-(x-5) \\</p><p>2x+4-x+5=\boxed{x+9}</p><p>`

Hope this helps.

r3t40

Answer 2

15) f(x) + g(x) = -x + 8

17) f(x) - g(x) = x + 9

Explanation:

15)

f(x) = 3x + 5

g(x)= - 4x + 3

Find f(x) + g(x)

f(x) + g(x) = 3x + 5 + ( - 4x + 3 )

f(x) + g(x) = 3x + 5 - 4x + 3

f(x) + g(x) = -x + 8

17)

f(x) = 2x +4

g(x)= x - 5

Find f(x) - g(x)

f(x) - g(x) = 2x +4 - (x - 5 )

f(x) - g(x) = 2x +4 - x + 5

f(x) - g(x) = x + 9