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anonymous
 one year ago
PLEAASEE HELP...will medal and fan...Let f(x) = x2 + x + 2 and g(x) = 2x2 + 5. Find f(g(x)).
anonymous
 one year ago
PLEAASEE HELP...will medal and fan...Let f(x) = x2 + x + 2 and g(x) = 2x2 + 5. Find f(g(x)).

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chrisdbest
 one year ago
Best ResponseYou've already chosen the best response.4Is that \[f(x) = x^2 + x + 2; g(x) = 2x^2 + 5\]

chrisdbest
 one year ago
Best ResponseYou've already chosen the best response.4So you have to put g(x) in for f(x)

chrisdbest
 one year ago
Best ResponseYou've already chosen the best response.4So that will be \[(2x^2 + 5)^2 + (2x^2 + 5) + 2 \]

chrisdbest
 one year ago
Best ResponseYou've already chosen the best response.4Because you will be inputting every g(x) value into every x in the f(x) field.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0so now do I combine like terms or?

chrisdbest
 one year ago
Best ResponseYou've already chosen the best response.4So \[(4x^4 + 25) + (2x^2 + 5) + 2\]

chrisdbest
 one year ago
Best ResponseYou've already chosen the best response.4Yes, you can combine like terms now

chrisdbest
 one year ago
Best ResponseYou've already chosen the best response.4The 2 stayed because we were plugging in g(x) terms in for f(x)

chrisdbest
 one year ago
Best ResponseYou've already chosen the best response.4So your final answer should look like \[4x^4 + 2x^2 +32\]

chrisdbest
 one year ago
Best ResponseYou've already chosen the best response.4Because the "2" didn't have a variable next to it, we didn't have to mess with it.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0ohh I see... thank you so much

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0yes..but im very bad at it though

chrisdbest
 one year ago
Best ResponseYou've already chosen the best response.4I feel yah man, I need help in PreCalc because there are some parts in PreCalc that I go str8 to OS for. Even though I'm taking PreCalc online, I'm getting 90% of my answers from OS.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I feel you..wish I could help you too. I am taking algebra online but try this website.. mathway.com

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0@chrisdbest \[(2x^2+5)^2 \neq 4x^4+25\] you have to foil that \[(2x^2+5)^2 = (2x^2+5)(2x^2+5)\]

chrisdbest
 one year ago
Best ResponseYou've already chosen the best response.4So \[4x^4 + 10x^2 + 25 ?\] That's what you meant?

chrisdbest
 one year ago
Best ResponseYou've already chosen the best response.4Did you get the right answer @ sharlin?

chrisdbest
 one year ago
Best ResponseYou've already chosen the best response.4Lols thats what I meant to pput. I'm dyslecix

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0im not sure because its not multiple choice

freckles
 one year ago
Best ResponseYou've already chosen the best response.0@peachpi was just talking about how (a+b)^2=a^2+2ab+b^2 instead of a^2+b^2 so changes will need to be made to your previous answer @sharlin

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0what would the final answer be?

chrisdbest
 one year ago
Best ResponseYou've already chosen the best response.4\[4x^4 +20x^2 +25\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Im stil confused on how you got there

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0He made the substitution and got \[f(g(x))=(2x^2+5)^2+(2x^2+5)+2\] which is the same as \[f(g(x))=(2x^2+5)(2x^2+5)+(2x^2+5)+2\] He multiplied and then combined like terms

chrisdbest
 one year ago
Best ResponseYou've already chosen the best response.4Peachpi got this. I feel like he can explain it to you better than I can.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0ok. now multiply (2x² +5)(2x² + 5) either using foil or the rule @freckles put up

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0so I got 4x^2+10x^2+10x^2+25

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Should be 4x^4. so that was just the first part of the equation. You need to combine it with the rest and combine like terms 4x^4+10x^2+10x^2+25 + 2x^2+ 5 +2

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I get a crazy answer

chrisdbest
 one year ago
Best ResponseYou've already chosen the best response.4Yo @peachpi Ima give you dat gold medal cuz I think you deserve it, cuz I don't got a lot of time to answer everyone's questions.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0@sharlin what did you get?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0really..im really not sure

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0yep. trust your work
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