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let f(x)=x+8 and g(x)=x^2 -6x-7. find f(g(2))

Sagot :

Konrad509idn
[tex]f(g(2))=2^2-6\cdot2-7+8=4-12+1=-7[/tex]
[tex]f(x)=x+8\\\\g(x)=x^2-6x-7\\\\f(g(x))=(x^2-6x-7)+8=x^2-6x+1\\\\f(g(2))=2^2-6\cdot2+1=4-12+1=-7\\\\Solution:f(g(2))=-7[/tex]
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