jjkjungkook39 jjkjungkook39

21-01-2022
Mathematics

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Given f(x) = -9x - 1 and g(x) = 4x + 1, find (f.g)(x).

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abbz1147 abbz1147

21-01-2022

(-9x -1) x (4x+1)
use foil method
-9x * 4x - 9x - 4x - 1
collect like terms by multiplying the -9x and the 4x together, then you add together both -9x and -4x. Then you have your answer below
-36x^2 - 13x - 1

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