aarilyncupquake aarilyncupquake

18-06-2021
Mathematics

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f(x) =2x+1 and g(x)=x²-7, find (f-g) (x)
help!!

Respuesta :

baral6887 baral6887

20-06-2021

Answer:

(f-g)(x)=2x+1-x^2+7

=2x-x^2+8

=-(x^2-2x-8)

=-(x^2-4x+2x-8)

=-{x(x-4)+2(x-4)}

=-(x+2)(x-4)

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