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Judith Barry
Mathematics
22 September, 17:46
F (x) = 4x+7, g (x) = 3x^2
find (fg) (x)
+5
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Hershey
22 September, 17:53
0
We want f (g (x)).
This means to plug the value of g (x) into every x you see in f (x) and simplify.
f (3x^2) = 4 (3x^2) + 7
f (3x^2) = 12x^2 + 7
So, f (g (x)) = 12x^2 + 7.
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