arlenesalcedo03 arlenesalcedo03

10-12-2016
Mathematics

contestada

Please help ASAP

If f(x)=x^3+x-7 and g(x)=-5x, find (fog)(x) and (gof)(x)

(fog)(x)=?

Respuesta :

Аноним Аноним

10-12-2016

I hope this helps you

x= -5x

f (g (x))=f (-5x)=(-5x)^3+(-5x)-7

f (-5x)= -125x^3-5x-7

x=x^3+x-7

g (f (x))=g (x^3+x-7)= -5 (x^3+x-7)

g (x^3+x-7)= -5x^3-5x+35

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