Question

If f(x) = 3x − 2 and g(x) = 2x − 1, find (f − g)(2).

7

1

−7

−1

Answer 1

find \(f(2)\) then find \(g(2)\) then subtract

Answer 2

do you know how to find \(f(2)\) ?

Answer 3

its 1

Answer 4

Perhaps easier would be to notice that
\[\eqalign{f(x)-g(x)&=(3x-2)-(2x-1) \\
&=3x-2x-2+1 \\
&=x-1 \\}\]
So \((f-g)(2)=(x-1)\bigg|_{x=2}=(2)-1=2-1=1\)

Answer 5

that does not seem easier to me:)
f(2) = 4
g(2) = 3
4-3=1