trinity199 trinity199

30-05-2017
Mathematics

contestada

What is the graph of the function f(x) = -x^2+x+20/x+4

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Floki22 Floki22

30-05-2017

f(x) = (-x²+x+20) / (x+4)

-x²+x+20 | x+4
+x²+4x -x+5
\\\\ 5x+20
-5x-20
\\\\\\\\\

f(x) = (x+4)(-x+5) / (x+4)

f(x) = (-x+5)

The graph is a decreasing line, with origin from 5.

Ver imagen Floki22

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