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can someone help me out with this one?
To find f(g(x)) you replace all the x's in f(x) with the expression from g(x).|dw:1439418816269:dw|
it's not f(g(x) though
My issue with why I'm confused is when you put the f in the g, i got gx=(4x^2 + x +1)^2 but that doesnt seem right
you are right. I misread it. You just do it the other way around. Replace x in g(x) with 4x² + x + 1
What you have is right, you just need to keep the -2
\[g(f(x)) = (4x^2+x+1)^2-2\]
do you have to expand it?
ok do you do (4x^2 + x + 1) * (4x^2 + x + 1) or do you just apply the ^2 one time?
yea you gotta solve it i guess
yeah you have to do (4x^2 + x + 1) * (4x^2 + x + 1)
ok i did that and im so confused tbh like idk what to do
i know how to multiply everything but its just so much
yeah it's a lot to keep track of. I distribute everything in the 1st parentheses to everything in the 2nd and add them all up at the end.|dw:1439419351533:dw|
then combine with the -2
flutter ok i knew i was doing it right i just wasnt sure. anyway thank you so much man i really appreciate it