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Ira Lisetskai [31]
3 years ago
10

F(x)=7x+7 and g(x)=6x^2 find (fg)(x)

Mathematics
2 answers:
DochEvi [55]3 years ago
7 0
F(g(x))=7(6x^2)+7 \\ We plug in our g(x) equation into f(x)
F(g(x)) = 42x^2+7=0 \\ 
F(g(x)) = x^2=-1/6 \\ 
F(g(x)) = x =  \sqrt \frac{-1}{6}i
Neporo4naja [7]3 years ago
4 0
F(x) = 7x + 7; g(x) = 6x²

(fg)(x) = f(x) · g(x)

(fg)(x) = (7x + 7) · 6x² = (7x)(6x²) + (7)(6x²) = 42x³ + 42x²
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