Let f(x)=x+8 and g(x) =x^2 -6x - 7. Find f(g(2))

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01-06-2017
Mathematics

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Let f(x)=x+8 and g(x) =x^2 -6x - 7. Find f(g(2))

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mreijepatmat mreijepatmat · Answer 1 · 2017-06-01T04:29:40+02:00

mreijepatmat mreijepatmat

01-06-2017

f(x)=x+8 and g(x) =x² -6x - 7

Calculate f(g(2))

1st calculate g(2) = 2² - 6(2) -7 ===> g(2) = - 15

2nd f(g(2)) becomes f(-15)

3rd replace x by -15 in f(x) =x+8 ==> -15+8=-7 and f(g(2)) = -7

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