airyana1114
  • airyana1114
Let f(x) = 3x^2-x+2 and g(x) = 5x^2-1. Find f(g(x)). Show each step of your work.
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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BIue
  • BIue
Show me what you think is the answer.
airyana1114
  • airyana1114
I know how to set it up to solve it, and if it were a regular equation without variables like "7(3x+10)" I know I would have to distribute the 7 but when I set up my problem I'm not sure how I would distribute, or what the first step would be. @BIue
airyana1114
  • airyana1114
So if I set it up it would look like (3x^2-x+2)(5x^2-1). If I distribute like regular I would get 15x^4-3x^2-5x^3+x+10x^2-2. Then I would simplify, correct? @BIue

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airyana1114
  • airyana1114
Then after I simplify that, I got 15x^4-5x^3+7x^2+x-2. Would that be my final answer? @BIue
triciaal
  • triciaal
what you are setting up would be correct to find f* g but this question is different .
triciaal
  • triciaal
f(g(x)) means use g(x) as your x in the f(x)
triciaal
  • triciaal
|dw:1442857698307:dw|
triciaal
  • triciaal
after you set it up you will use the distributive property, like in your example, to simplify
airyana1114
  • airyana1114
Where did "h" come from? @triciaal
triciaal
  • triciaal
just to show you the substitution
airyana1114
  • airyana1114
Ohhhhh, I get what you're saying now. Thank you so much!
triciaal
  • triciaal
|dw:1442860209321:dw|
triciaal
  • triciaal
great you are welcome

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