cboss4287689 cboss4287689

15-09-2018
Mathematics

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let f (x)=x-2 and g(x)=x to the second power -7x-9.find f (g(-1))

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jimrgrant1 jimrgrant1

15-09-2018

f(g(-1)) = - 3

Evaluate g(-1) and substitute into f(x)

g(-1) = (-1)² -7(-1) - 9 = 1 + 7 - 9 = - 1

f(g(-1)) = (-1) - 2 = - 3

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