hayleyc24
  • hayleyc24
2x^4 + 2x^2 +32 can you break this down any farther? Help will be rewarded
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
cwrw238
  • cwrw238
well first take 2 out = 2(x^4 + x^2 + 16)
hayleyc24
  • hayleyc24
why would you take the 2 out its attached to the x squared
cwrw238
  • cwrw238
2 is the GCF of 2, 2 and 32

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cwrw238
  • cwrw238
but the expression in the parentheses won't factor
hayleyc24
  • hayleyc24
you've lost me and I just realized I forgot to include this f(g(x)) = and then the problem
hayleyc24
  • hayleyc24
I've already solved for most of the problem would it help if I gave you the original problem?
cwrw238
  • cwrw238
lets have the whole problem then
cwrw238
  • cwrw238
yes
hayleyc24
  • hayleyc24
okay give me a sec
hayleyc24
  • hayleyc24
Let f(x) = x2 + x + 2 and g(x) = 2x2 + 5. Find f(g(x)). Show each step of your work.
cwrw238
  • cwrw238
oh ok what you do is replace very occurrence of x in f(x) by g(x)
hayleyc24
  • hayleyc24
Plug in the g(x) equation where all the x's are in f(x). (2x^2 + 5)^2 + (2x^2 + 5) + 2 2x^4 + 5^2 + 2x^2 + 5 + 2 2x^4 + 25 +2x^2 + 7 2x^4 + 2x^2 + 32
cwrw238
  • cwrw238
f(x) = x2 + x + 2 f((g(x)) = (2x^2 + 5)^2 + 2x^2 + 5 + 2 = 4x^4 + 20x^2 + 25 + 2x^2 + 7 = 4x^4 + 22x^2 + 32
cwrw238
  • cwrw238
you didnt expand (2x^2 + 5)^2 correctly
hayleyc24
  • hayleyc24
Thank you, so the 22 and 4 cannot be combined becuase of the different exponents right?
cwrw238
  • cwrw238
right
hayleyc24
  • hayleyc24
Thank you thank you thank you thank you!!!!!!!!
cwrw238
  • cwrw238
yw lol

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