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5 March, 02:10

Given the functions: f (x) = x^2 + 3x and g (x) = - 3 + x what is f (g (x)) ?

a) x^2 - 3x

b) x^2 - 3x + 9

c) x^2 + 3x + 9

c) 3^x + 9

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Answers (1)
  1. 5 March, 04:43
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    You simply plug in g (x) to f (x) so it would be f (-3+x) = (-3+x) ^2+3x - - > f (g (x)) = (-3+x) ^2+3x then the answer would be x^2 - 3x + 9
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