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F(x)=3x+ 1 g(x)=x² -5x -2 Find g(f(x))
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F(x)=3x+ 1
g(x)=x² -5x -2
Find g(f(x))

User BenH
by
8.3k points

1 Answer

3 votes

Answer:

9x²-9x-6

Explanation:

f(x)=3x+ 1

g(x)=x² -5x -2

g(f(x))=g(3x+1) ∵f(x)=3x+1

=(3x+1)²-5(3x+1)-2

=9x²+1+6x-15x-5-2 ∵(a+b)²=a²+b²+2ab

=9x²-9x-6 or 3(3x²-3x-2)

User Hmhensen
by
9.2k points
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