Question

how can I:
find gof: f(x)=x-1 and g(x)=x^2+x

Thanks in advance!

Answer 1

for evey place you have x in the function g(x), replace it with the expression for f(x)

Answer 2

You see I have done that much but I don't get the right answer which is x^2-x

Answer 3

(x-1)^2+(x-1)

Answer 4

I have that

Answer 5

shoud I factor?

Answer 6

GOT IT! THANKS!!! :)

Answer 7

I feel silly I got all that problem but I forgot to add the x-1 :p

Answer 8

that's just how math is sometimes :P

Answer 9

yeah..some times it can be a little pain :) Thanks for your help!