anonymous
  • anonymous
f(x)=-x + 2 g(x)=-4x^2+ x + 5 Find (fog)(x)
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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anonymous
  • anonymous
@jim_thompson5910 whats fog?
cwrw238
  • cwrw238
same as fg(x)
anonymous
  • anonymous
o

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anonymous
  • anonymous
so first i'd do -4(-x+2)^2+(-x+2)+5
cwrw238
  • cwrw238
substiitute g(x) for the x in f(x) and simplify
anonymous
  • anonymous
ok so my final answer would be -4x^2+15x-9
anonymous
  • anonymous
actually i would do -(-4x^2+x+5)+2
anonymous
  • anonymous
and my final answer would be 4x^2-x-3
anonymous
  • anonymous
right?
anonymous
  • anonymous
Can you please check this? last one! @kirbykirby @jim_thompson5910
anonymous
  • anonymous
@cwrw238
anonymous
  • anonymous
hello?
anonymous
  • anonymous
someone hook a girl up?!?!?!?!
kirbykirby
  • kirbykirby
yes the last answer you gave is good
jim_thompson5910
  • jim_thompson5910
( f o g )(x) = f(g(x)) f(x) = -x + 2 f(g(x)) = -(g(x)) + 2 f(g(x)) = -(-4x^2+ x + 5) + 2 simplify
anonymous
  • anonymous
thank you all!!!!!!!!!!!!!!!!!!!!!!!!!!!
jim_thompson5910
  • jim_thompson5910
so you got it, the final answer is 4x^2-x-3 (just saw you posted that), so nice work
anonymous
  • anonymous
ty!!!!!!!!!!!!!!!!!!!!!!!

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