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Find g of f for f=7x+5 and g(x)=5x^2+4x-3

Find g of f for f=7x+5 and g(x)=5x^2+4x-3
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4 votes
Find g of f for f=7x+5 and g(x)=5x^2+4x-3

User Foho
by
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1 Answer

4 votes
basically (g of f)x=(f(g(x)) so
g of f=f(g(x))=7(5x^2+4x-3)+5
distribute
f(g(x))=35x^2+28x-21+5=35x^2+28x-16

g of f=35x^2+28x-16
User Lulijeta
by
7.0k points
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