Given #f(x)=3x+5# and #g (x)= -8x- 10#, how do you find f(x)+g(x), f(x)-g(x), f(x)*g(x), #f(x)divg(x)#?

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Answer 1 · 2018-05-29T15:59:48

see below....

#f(x)+g(x)=3x+5-8x-10#

#f(x)+g(x)=-5x-7#

#-------------------#

#f(x)-g(x)=3x+5-(-8x-10)#

#f(x)-g(x)=3x+5+8x+10#

#f(x)-g(x)=11x+15#

#-------------------#

#f(x)*g(x)=(3x+5)(-8x-10)#

#f(x)*g(x)=-24x^2-70x-50#

#-------------------#

#f(x)/g(x)=(3x+5)/(-8x-10)#

#f(x)/g(x)=-(3x+5)/(2(4x+5))#