Question

f(x) = 2x - k, g(x) = 4x+5 find fog = gof and value of k​

Answer 1

Step-by-step explanation:

fog=2(4x+5)-k

=8x+10-k

gof=4(2x-k)+5

=8x-4k+5

fog=gof

8x+10-k=8x-4k+5

3k=-5

k=-5/3