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13-06-2016
Mathematics

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F(x)= x^2+6 and g(x)=x+8/x find( g o f)(-7)

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crisforp crisforp

13-06-2016

f(-7) = (-7)^2 + 6 = 49 + 6 = 55;
( g o f)(-7) = g(f(-7)) = g(55) = (55 + 8)/5 = 63/5;

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