Bvbmalo8magy Bvbmalo8magy
  • 21-12-2016
  • Mathematics
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if g(x)= 5-x^2 what's g(g(x))

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Apocrophon
Apocrophon Apocrophon
  • 21-12-2016
g(x) = 5 - x^2
g(g(x)) = 5 - (5 - x^2)^2
g(g(x)) = 5 - (5 - x^2)(5 - x^2)
g(g(x))= 5 - (25 - 10x^2 + x^4)
g(g(x))= -x^4 + 10x^2 - 20
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can someone please help me! I really don't understand this