Question #25f72

2 Answers
Nov 1, 2017

#(f/g)(8)=-169#

Explanation:

#"(f/g)(x)=(f(x))/(g(x))#

#(f(x))/(g(x))=(3-2x)/(1/(x+5)#

#"to evaluate "(f/g)(8)" substitute x = 8 into "(f/g)(x)#

#rArr(f/g)(color(red)(8))=(3-(2xxcolor(red)(8)))/(1/(color(red)(8)+5))=(-13)/(1/13)#

#color(white)(xxxxxxxxxxxxxxxxxx)=-13xx13/1=-169#

Nov 1, 2017

#(f/g)(8)=-169#

Explanation:

#f(x)=3-2x#
#g(x)=1/(x+5)#
#(f/g)(x)=(3-2x)*(x+5)#
#(f/g)(8)=(3-2*8)*(8+5)=(3-16)*(13)=(-13)*(13)=-169#