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anonymous
 one year ago
Let f(x) = x2 + x + 2 and g(x) = 2x2 + 5. Find f(g(x)). Show each step of your work.
I just need some help to start. Will fan and medal...
anonymous
 one year ago
Let f(x) = x2 + x + 2 and g(x) = 2x2 + 5. Find f(g(x)). Show each step of your work. I just need some help to start. Will fan and medal...

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Luigi0210
 one year ago
Best ResponseYou've already chosen the best response.1You are plugging in g(x) into f(x). So you are treating the function g(x) like another x almost. So where ever you see an "x" in f(x) you plug in the function g(x)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0@Luigi0210 So then I start with f(2x2+5) = (2x2+5) 2 + (2x2+5) + 2?

Luigi0210
 one year ago
Best ResponseYou've already chosen the best response.1Now just simplify it and you're done.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0This might be a dumb question, but where do I start to simplify it?

Luigi0210
 one year ago
Best ResponseYou've already chosen the best response.1"The only dumb questions are the ones you do not ask" And you can start by dealing with that square term: \(\large \color{red}{(2x^2+5)^2} +(2x^2+5)+2\) Should be easier after that (:

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Thank you for all your help!

Luigi0210
 one year ago
Best ResponseYou've already chosen the best response.1No problem! \(\Large \color{green}{\ddot \smile} \)
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